Home / 158,347.66-218,517.18-90,385.72

Finding the Fourth Proportional to 158,347.66, 218,517.18 and 90,385.72

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Solution

The fourth proportional to 158,347.66, 218,517.18 and 90,385.72 is: 124,730.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,347.66 : 218,517.18 = 90,385.72 : x
  2. Step 2: Convert to fraction form
    158,347.66/218,517.18 = 90,385.72/x
  3. Step 3: Cross multiply
    158,347.66x = 218,517.18 × 90,385.72
  4. Step 4: Simplify right side
    158,347.66x = 19,750,832,646.67
  5. Step 5: Solve for x
    x = 19,750,832,646.67/158,347.66
  6. Step 6: Final answer
    x = 124,730.81

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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.