Home / 139,989,823,742.49-193,183,900,810.21-78,191,295,267.82

Finding the Fourth Proportional to 139,989,823,742.49, 193,183,900,810.21 and 78,191,295,267.82

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Solution

The fourth proportional to 139,989,823,742.49, 193,183,900,810.21 and 78,191,295,267.82 is: 107,902,839,116.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,989,823,742.49 : 193,183,900,810.21 = 78,191,295,267.82 : x
  2. Step 2: Convert to fraction form
    139,989,823,742.49/193,183,900,810.21 = 78,191,295,267.82/x
  3. Step 3: Cross multiply
    139,989,823,742.49x = 193,183,900,810.21 × 78,191,295,267.82
  4. Step 4: Simplify right side
    139,989,823,742.49x = 15,105,299,429,240,382,423,040
  5. Step 5: Solve for x
    x = 15,105,299,429,240,382,423,040/139,989,823,742.49
  6. Step 6: Final answer
    x = 107,902,839,116.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.