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Finding the Fourth Proportional to 145,862.40, 218,793.60 and 136,020.90

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Solution

The fourth proportional to 145,862.40, 218,793.60 and 136,020.90 is: 204,031.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,862.40 : 218,793.60 = 136,020.90 : x
  2. Step 2: Convert to fraction form
    145,862.40/218,793.60 = 136,020.90/x
  3. Step 3: Cross multiply
    145,862.40x = 218,793.60 × 136,020.90
  4. Step 4: Simplify right side
    145,862.40x = 29,760,502,386.24
  5. Step 5: Solve for x
    x = 29,760,502,386.24/145,862.40
  6. Step 6: Final answer
    x = 204,031.35

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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.