Home / 78,732,133.70-118,098,200.55-69,485,060.30

Finding the Fourth Proportional to 78,732,133.70, 118,098,200.55 and 69,485,060.30

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Solution

The fourth proportional to 78,732,133.70, 118,098,200.55 and 69,485,060.30 is: 104,227,590.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,133.70 : 118,098,200.55 = 69,485,060.30 : x
  2. Step 2: Convert to fraction form
    78,732,133.70/118,098,200.55 = 69,485,060.30/x
  3. Step 3: Cross multiply
    78,732,133.70x = 118,098,200.55 × 69,485,060.30
  4. Step 4: Simplify right side
    78,732,133.70x = 8,206,060,586,538,243
  5. Step 5: Solve for x
    x = 8,206,060,586,538,243/78,732,133.70
  6. Step 6: Final answer
    x = 104,227,590.45

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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.