Home / 138,001.55-207,002.33-90,762.35

Finding the Fourth Proportional to 138,001.55, 207,002.33 and 90,762.35

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Solution

The fourth proportional to 138,001.55, 207,002.33 and 90,762.35 is: 136,143.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,001.55 : 207,002.33 = 90,762.35 : x
  2. Step 2: Convert to fraction form
    138,001.55/207,002.33 = 90,762.35/x
  3. Step 3: Cross multiply
    138,001.55x = 207,002.33 × 90,762.35
  4. Step 4: Simplify right side
    138,001.55x = 18,788,017,472.46
  5. Step 5: Solve for x
    x = 18,788,017,472.46/138,001.55
  6. Step 6: Final answer
    x = 136,143.53

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1.5x scale

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.