Home / 90,633.20-135,949.80-59,140.40

Finding the Fourth Proportional to 90,633.20, 135,949.80 and 59,140.40

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Solution

The fourth proportional to 90,633.20, 135,949.80 and 59,140.40 is: 88,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,633.20 : 135,949.80 = 59,140.40 : x
  2. Step 2: Convert to fraction form
    90,633.20/135,949.80 = 59,140.40/x
  3. Step 3: Cross multiply
    90,633.20x = 135,949.80 × 59,140.40
  4. Step 4: Simplify right side
    90,633.20x = 8,040,125,551.92
  5. Step 5: Solve for x
    x = 8,040,125,551.92/90,633.20
  6. Step 6: Final answer
    x = 88,710.60

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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.