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Finding the Fourth Proportional to 169,989,419.80, 254,984,129.70 and 55,056,446.20

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Solution

The fourth proportional to 169,989,419.80, 254,984,129.70 and 55,056,446.20 is: 82,584,669.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,989,419.80 : 254,984,129.70 = 55,056,446.20 : x
  2. Step 2: Convert to fraction form
    169,989,419.80/254,984,129.70 = 55,056,446.20/x
  3. Step 3: Cross multiply
    169,989,419.80x = 254,984,129.70 × 55,056,446.20
  4. Step 4: Simplify right side
    169,989,419.80x = 14,038,520,018,681,872
  5. Step 5: Solve for x
    x = 14,038,520,018,681,872/169,989,419.80
  6. Step 6: Final answer
    x = 82,584,669.30

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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.