Home / 90,585.16-135,267.74-73,978.14

Finding the Fourth Proportional to 90,585.16, 135,267.74 and 73,978.14

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Solution

The fourth proportional to 90,585.16, 135,267.74 and 73,978.14 is: 110,469.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,585.16 : 135,267.74 = 73,978.14 : x
  2. Step 2: Convert to fraction form
    90,585.16/135,267.74 = 73,978.14/x
  3. Step 3: Cross multiply
    90,585.16x = 135,267.74 × 73,978.14
  4. Step 4: Simplify right side
    90,585.16x = 10,006,855,807.20
  5. Step 5: Solve for x
    x = 10,006,855,807.20/90,585.16
  6. Step 6: Final answer
    x = 110,469.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.