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Finding the Fourth Proportional to 99,737.64, 148,959.81 and 90,358.92

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Solution

The fourth proportional to 99,737.64, 148,959.81 and 90,358.92 is: 134,952.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,737.64 : 148,959.81 = 90,358.92 : x
  2. Step 2: Convert to fraction form
    99,737.64/148,959.81 = 90,358.92/x
  3. Step 3: Cross multiply
    99,737.64x = 148,959.81 × 90,358.92
  4. Step 4: Simplify right side
    99,737.64x = 13,459,847,555.01
  5. Step 5: Solve for x
    x = 13,459,847,555.01/99,737.64
  6. Step 6: Final answer
    x = 134,952.54

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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.