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Finding the Fourth Proportional to 161,978,885.60, 242,989,640.40 and 59,814,687.20

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Solution

The fourth proportional to 161,978,885.60, 242,989,640.40 and 59,814,687.20 is: 89,729,900.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,978,885.60 : 242,989,640.40 = 59,814,687.20 : x
  2. Step 2: Convert to fraction form
    161,978,885.60/242,989,640.40 = 59,814,687.20/x
  3. Step 3: Cross multiply
    161,978,885.60x = 242,989,640.40 × 59,814,687.20
  4. Step 4: Simplify right side
    161,978,885.60x = 14,534,349,333,366,484
  5. Step 5: Solve for x
    x = 14,534,349,333,366,484/161,978,885.60
  6. Step 6: Final answer
    x = 89,729,900.78

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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.