Home / 120,020,166.78-165,628,337.70-65,016,023.28

Finding the Fourth Proportional to 120,020,166.78, 165,628,337.70 and 65,016,023.28

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Solution

The fourth proportional to 120,020,166.78, 165,628,337.70 and 65,016,023.28 is: 89,722,387.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,020,166.78 : 165,628,337.70 = 65,016,023.28 : x
  2. Step 2: Convert to fraction form
    120,020,166.78/165,628,337.70 = 65,016,023.28/x
  3. Step 3: Cross multiply
    120,020,166.78x = 165,628,337.70 × 65,016,023.28
  4. Step 4: Simplify right side
    120,020,166.78x = 10,768,495,859,730,902
  5. Step 5: Solve for x
    x = 10,768,495,859,730,902/120,020,166.78
  6. Step 6: Final answer
    x = 89,722,387.07

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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.