Home / 139,968,055.76-193,155,631.80-78,084,703.76

Finding the Fourth Proportional to 139,968,055.76, 193,155,631.80 and 78,084,703.76

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Solution

The fourth proportional to 139,968,055.76, 193,155,631.80 and 78,084,703.76 is: 107,756,732.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,055.76 : 193,155,631.80 = 78,084,703.76 : x
  2. Step 2: Convert to fraction form
    139,968,055.76/193,155,631.80 = 78,084,703.76/x
  3. Step 3: Cross multiply
    139,968,055.76x = 193,155,631.80 × 78,084,703.76
  4. Step 4: Simplify right side
    139,968,055.76x = 15,082,500,288,678,638
  5. Step 5: Solve for x
    x = 15,082,500,288,678,638/139,968,055.76
  6. Step 6: Final answer
    x = 107,756,732.11

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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.