Home / 145,384.08-218,047.38-138,174.70

Finding the Fourth Proportional to 145,384.08, 218,047.38 and 138,174.70

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Solution

The fourth proportional to 145,384.08, 218,047.38 and 138,174.70 is: 207,234.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,384.08 : 218,047.38 = 138,174.70 : x
  2. Step 2: Convert to fraction form
    145,384.08/218,047.38 = 138,174.70/x
  3. Step 3: Cross multiply
    145,384.08x = 218,047.38 × 138,174.70
  4. Step 4: Simplify right side
    145,384.08x = 30,128,631,276.11
  5. Step 5: Solve for x
    x = 30,128,631,276.11/145,384.08
  6. Step 6: Final answer
    x = 207,234.73

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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.