Home / 78,753,604.70-118,130,407.05-71,573,246.30

Finding the Fourth Proportional to 78,753,604.70, 118,130,407.05 and 71,573,246.30

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Solution

The fourth proportional to 78,753,604.70, 118,130,407.05 and 71,573,246.30 is: 107,359,869.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,753,604.70 : 118,130,407.05 = 71,573,246.30 : x
  2. Step 2: Convert to fraction form
    78,753,604.70/118,130,407.05 = 71,573,246.30/x
  3. Step 3: Cross multiply
    78,753,604.70x = 118,130,407.05 × 71,573,246.30
  4. Step 4: Simplify right side
    78,753,604.70x = 8,454,976,719,308,906
  5. Step 5: Solve for x
    x = 8,454,976,719,308,906/78,753,604.70
  6. Step 6: Final answer
    x = 107,359,869.45

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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.