Home / 138,971,350.32-208,321,467.90-66,168,569.76

Finding the Fourth Proportional to 138,971,350.32, 208,321,467.90 and 66,168,569.76

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Solution

The fourth proportional to 138,971,350.32, 208,321,467.90 and 66,168,569.76 is: 99,188,311.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,971,350.32 : 208,321,467.90 = 66,168,569.76 : x
  2. Step 2: Convert to fraction form
    138,971,350.32/208,321,467.90 = 66,168,569.76/x
  3. Step 3: Cross multiply
    138,971,350.32x = 208,321,467.90 × 66,168,569.76
  4. Step 4: Simplify right side
    138,971,350.32x = 13,784,333,581,246,750
  5. Step 5: Solve for x
    x = 13,784,333,581,246,750/138,971,350.32
  6. Step 6: Final answer
    x = 99,188,311.47

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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.