Home / 88,135.38-121,635.72-52,328.70

Finding the Fourth Proportional to 88,135.38, 121,635.72 and 52,328.70

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Solution

The fourth proportional to 88,135.38, 121,635.72 and 52,328.70 is: 72,218.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,135.38 : 121,635.72 = 52,328.70 : x
  2. Step 2: Convert to fraction form
    88,135.38/121,635.72 = 52,328.70/x
  3. Step 3: Cross multiply
    88,135.38x = 121,635.72 × 52,328.70
  4. Step 4: Simplify right side
    88,135.38x = 6,365,039,101.16
  5. Step 5: Solve for x
    x = 6,365,039,101.16/88,135.38
  6. Step 6: Final answer
    x = 72,218.89

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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.