Home / 78,734,117.60-118,101,176.40-77,672,434.40

Finding the Fourth Proportional to 78,734,117.60, 118,101,176.40 and 77,672,434.40

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Solution

The fourth proportional to 78,734,117.60, 118,101,176.40 and 77,672,434.40 is: 116,508,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,734,117.60 : 118,101,176.40 = 77,672,434.40 : x
  2. Step 2: Convert to fraction form
    78,734,117.60/118,101,176.40 = 77,672,434.40/x
  3. Step 3: Cross multiply
    78,734,117.60x = 118,101,176.40 × 77,672,434.40
  4. Step 4: Simplify right side
    78,734,117.60x = 9,173,205,876,491,830
  5. Step 5: Solve for x
    x = 9,173,205,876,491,830/78,734,117.60
  6. Step 6: Final answer
    x = 116,508,651.60

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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.