Home / 147,819.30-221,728.95-54,312.90

Finding the Fourth Proportional to 147,819.30, 221,728.95 and 54,312.90

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Solution

The fourth proportional to 147,819.30, 221,728.95 and 54,312.90 is: 81,469.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,819.30 : 221,728.95 = 54,312.90 : x
  2. Step 2: Convert to fraction form
    147,819.30/221,728.95 = 54,312.90/x
  3. Step 3: Cross multiply
    147,819.30x = 221,728.95 × 54,312.90
  4. Step 4: Simplify right side
    147,819.30x = 12,042,742,288.46
  5. Step 5: Solve for x
    x = 12,042,742,288.46/147,819.30
  6. Step 6: Final answer
    x = 81,469.35

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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.