Home / 90,861.30-136,291.95-57,618.90

Finding the Fourth Proportional to 90,861.30, 136,291.95 and 57,618.90

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Solution

The fourth proportional to 90,861.30, 136,291.95 and 57,618.90 is: 86,428.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,861.30 : 136,291.95 = 57,618.90 : x
  2. Step 2: Convert to fraction form
    90,861.30/136,291.95 = 57,618.90/x
  3. Step 3: Cross multiply
    90,861.30x = 136,291.95 × 57,618.90
  4. Step 4: Simplify right side
    90,861.30x = 7,852,992,237.86
  5. Step 5: Solve for x
    x = 7,852,992,237.86/90,861.30
  6. Step 6: Final answer
    x = 86,428.35

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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.