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Finding the Fourth Proportional to 145,373.76, 218,060.64 and 80,124.48

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Solution

The fourth proportional to 145,373.76, 218,060.64 and 80,124.48 is: 120,186.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,373.76 : 218,060.64 = 80,124.48 : x
  2. Step 2: Convert to fraction form
    145,373.76/218,060.64 = 80,124.48/x
  3. Step 3: Cross multiply
    145,373.76x = 218,060.64 × 80,124.48
  4. Step 4: Simplify right side
    145,373.76x = 17,471,995,388.47
  5. Step 5: Solve for x
    x = 17,471,995,388.47/145,373.76
  6. Step 6: Final answer
    x = 120,186.72

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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.