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Finding the Fourth Proportional to 78,746,677.20, 118,120,015.80 and 78,746,677.20

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Solution

The fourth proportional to 78,746,677.20, 118,120,015.80 and 78,746,677.20 is: 118,120,015.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,746,677.20 : 118,120,015.80 = 78,746,677.20 : x
  2. Step 2: Convert to fraction form
    78,746,677.20/118,120,015.80 = 78,746,677.20/x
  3. Step 3: Cross multiply
    78,746,677.20x = 118,120,015.80 × 78,746,677.20
  4. Step 4: Simplify right side
    78,746,677.20x = 9,301,558,755,061,500
  5. Step 5: Solve for x
    x = 9,301,558,755,061,500/78,746,677.20
  6. Step 6: Final answer
    x = 118,120,015.80

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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.