Home / 109,148.87-150,624-61,402.20

Finding the Fourth Proportional to 109,148.87, 150,624 and 61,402.20

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Solution

The fourth proportional to 109,148.87, 150,624 and 61,402.20 is: 84,734.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,148.87 : 150,624 = 61,402.20 : x
  2. Step 2: Convert to fraction form
    109,148.87/150,624 = 61,402.20/x
  3. Step 3: Cross multiply
    109,148.87x = 150,624 × 61,402.20
  4. Step 4: Simplify right side
    109,148.87x = 9,248,644,972.80
  5. Step 5: Solve for x
    x = 9,248,644,972.80/109,148.87
  6. Step 6: Final answer
    x = 84,734.23

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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.