Home / 147,431.32-221,154.54-42,251.20

Finding the Fourth Proportional to 147,431.32, 221,154.54 and 42,251.20

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Solution

The fourth proportional to 147,431.32, 221,154.54 and 42,251.20 is: 63,378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,431.32 : 221,154.54 = 42,251.20 : x
  2. Step 2: Convert to fraction form
    147,431.32/221,154.54 = 42,251.20/x
  3. Step 3: Cross multiply
    147,431.32x = 221,154.54 × 42,251.20
  4. Step 4: Simplify right side
    147,431.32x = 9,344,044,700.45
  5. Step 5: Solve for x
    x = 9,344,044,700.45/147,431.32
  6. Step 6: Final answer
    x = 63,378.97

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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.