Home / 120,332.12-166,060.40-65,888.78

Finding the Fourth Proportional to 120,332.12, 166,060.40 and 65,888.78

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Solution

The fourth proportional to 120,332.12, 166,060.40 and 65,888.78 is: 90,927.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,332.12 : 166,060.40 = 65,888.78 : x
  2. Step 2: Convert to fraction form
    120,332.12/166,060.40 = 65,888.78/x
  3. Step 3: Cross multiply
    120,332.12x = 166,060.40 × 65,888.78
  4. Step 4: Simplify right side
    120,332.12x = 10,941,516,002.57
  5. Step 5: Solve for x
    x = 10,941,516,002.57/120,332.12
  6. Step 6: Final answer
    x = 90,927.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.