Home / 90,155.07-135,275.13-40,230.72

Finding the Fourth Proportional to 90,155.07, 135,275.13 and 40,230.72

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Solution

The fourth proportional to 90,155.07, 135,275.13 and 40,230.72 is: 60,365.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,155.07 : 135,275.13 = 40,230.72 : x
  2. Step 2: Convert to fraction form
    90,155.07/135,275.13 = 40,230.72/x
  3. Step 3: Cross multiply
    90,155.07x = 135,275.13 × 40,230.72
  4. Step 4: Simplify right side
    90,155.07x = 5,442,215,877.99
  5. Step 5: Solve for x
    x = 5,442,215,877.99/90,155.07
  6. Step 6: Final answer
    x = 60,365.06

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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.