Home / 147,623,999.70-221,435,999.55-78,749,246.10

Finding the Fourth Proportional to 147,623,999.70, 221,435,999.55 and 78,749,246.10

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Solution

The fourth proportional to 147,623,999.70, 221,435,999.55 and 78,749,246.10 is: 118,123,869.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,623,999.70 : 221,435,999.55 = 78,749,246.10 : x
  2. Step 2: Convert to fraction form
    147,623,999.70/221,435,999.55 = 78,749,246.10/x
  3. Step 3: Cross multiply
    147,623,999.70x = 221,435,999.55 × 78,749,246.10
  4. Step 4: Simplify right side
    147,623,999.70x = 17,437,918,023,962,438
  5. Step 5: Solve for x
    x = 17,437,918,023,962,438/147,623,999.70
  6. Step 6: Final answer
    x = 118,123,869.15

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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.