Home / 112,955,921.70-169,433,882.55-78,518,544.90

Finding the Fourth Proportional to 112,955,921.70, 169,433,882.55 and 78,518,544.90

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Solution

The fourth proportional to 112,955,921.70, 169,433,882.55 and 78,518,544.90 is: 117,777,817.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,955,921.70 : 169,433,882.55 = 78,518,544.90 : x
  2. Step 2: Convert to fraction form
    112,955,921.70/169,433,882.55 = 78,518,544.90/x
  3. Step 3: Cross multiply
    112,955,921.70x = 169,433,882.55 × 78,518,544.90
  4. Step 4: Simplify right side
    112,955,921.70x = 13,303,701,914,583,504
  5. Step 5: Solve for x
    x = 13,303,701,914,583,504/112,955,921.70
  6. Step 6: Final answer
    x = 117,777,817.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.