Home / 78,734,139.60-118,101,209.40-77,672,456.40

Finding the Fourth Proportional to 78,734,139.60, 118,101,209.40 and 77,672,456.40

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Solution

The fourth proportional to 78,734,139.60, 118,101,209.40 and 77,672,456.40 is: 116,508,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,734,139.60 : 118,101,209.40 = 77,672,456.40 : x
  2. Step 2: Convert to fraction form
    78,734,139.60/118,101,209.40 = 77,672,456.40/x
  3. Step 3: Cross multiply
    78,734,139.60x = 118,101,209.40 × 77,672,456.40
  4. Step 4: Simplify right side
    78,734,139.60x = 9,173,211,037,908,772
  5. Step 5: Solve for x
    x = 9,173,211,037,908,772/78,734,139.60
  6. Step 6: Final answer
    x = 116,508,684.60

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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.