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Finding the Fourth Proportional to 169,989,257.80, 254,983,886.70 and 54,985,425.40

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Solution

The fourth proportional to 169,989,257.80, 254,983,886.70 and 54,985,425.40 is: 82,478,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,989,257.80 : 254,983,886.70 = 54,985,425.40 : x
  2. Step 2: Convert to fraction form
    169,989,257.80/254,983,886.70 = 54,985,425.40/x
  3. Step 3: Cross multiply
    169,989,257.80x = 254,983,886.70 × 54,985,425.40
  4. Step 4: Simplify right side
    169,989,257.80x = 14,020,397,480,344,902
  5. Step 5: Solve for x
    x = 14,020,397,480,344,902/169,989,257.80
  6. Step 6: Final answer
    x = 82,478,138.10

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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.