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Finding the Fourth Proportional to 161,978,877.60, 242,989,628.40 and 59,814,679.20

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Solution

The fourth proportional to 161,978,877.60, 242,989,628.40 and 59,814,679.20 is: 89,729,888.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,978,877.60 : 242,989,628.40 = 59,814,679.20 : x
  2. Step 2: Convert to fraction form
    161,978,877.60/242,989,628.40 = 59,814,679.20/x
  3. Step 3: Cross multiply
    161,978,877.60x = 242,989,628.40 × 59,814,679.20
  4. Step 4: Simplify right side
    161,978,877.60x = 14,534,346,671,673,210
  5. Step 5: Solve for x
    x = 14,534,346,671,673,210/161,978,877.60
  6. Step 6: Final answer
    x = 89,729,888.78

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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.