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Finding the Fourth Proportional to 144,138.45, 216,213.14 and 38,957.46

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Solution

The fourth proportional to 144,138.45, 216,213.14 and 38,957.46 is: 58,437.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,138.45 : 216,213.14 = 38,957.46 : x
  2. Step 2: Convert to fraction form
    144,138.45/216,213.14 = 38,957.46/x
  3. Step 3: Cross multiply
    144,138.45x = 216,213.14 × 38,957.46
  4. Step 4: Simplify right side
    144,138.45x = 8,423,114,753.02
  5. Step 5: Solve for x
    x = 8,423,114,753.02/144,138.45
  6. Step 6: Final answer
    x = 58,437.67

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1.5x scale

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.