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Finding the Fourth Proportional to 169,989,421.80, 254,984,132.70 and 55,056,448.20

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Solution

The fourth proportional to 169,989,421.80, 254,984,132.70 and 55,056,448.20 is: 82,584,672.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,989,421.80 : 254,984,132.70 = 55,056,448.20 : x
  2. Step 2: Convert to fraction form
    169,989,421.80/254,984,132.70 = 55,056,448.20/x
  3. Step 3: Cross multiply
    169,989,421.80x = 254,984,132.70 × 55,056,448.20
  4. Step 4: Simplify right side
    169,989,421.80x = 14,038,520,693,819,476
  5. Step 5: Solve for x
    x = 14,038,520,693,819,476/169,989,421.80
  6. Step 6: Final answer
    x = 82,584,672.30

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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.