Home / 147,545.40-203,630.94-90,172.92

Finding the Fourth Proportional to 147,545.40, 203,630.94 and 90,172.92

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Solution

The fourth proportional to 147,545.40, 203,630.94 and 90,172.92 is: 124,449.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,545.40 : 203,630.94 = 90,172.92 : x
  2. Step 2: Convert to fraction form
    147,545.40/203,630.94 = 90,172.92/x
  3. Step 3: Cross multiply
    147,545.40x = 203,630.94 × 90,172.92
  4. Step 4: Simplify right side
    147,545.40x = 18,361,996,462.14
  5. Step 5: Solve for x
    x = 18,361,996,462.14/147,545.40
  6. Step 6: Final answer
    x = 124,449.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.