Home / 145,129.61-217,686.66-45,278.34

Finding the Fourth Proportional to 145,129.61, 217,686.66 and 45,278.34

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Solution

The fourth proportional to 145,129.61, 217,686.66 and 45,278.34 is: 67,915.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,129.61 : 217,686.66 = 45,278.34 : x
  2. Step 2: Convert to fraction form
    145,129.61/217,686.66 = 45,278.34/x
  3. Step 3: Cross multiply
    145,129.61x = 217,686.66 × 45,278.34
  4. Step 4: Simplify right side
    145,129.61x = 9,856,490,604.94
  5. Step 5: Solve for x
    x = 9,856,490,604.94/145,129.61
  6. Step 6: Final answer
    x = 67,915.09

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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.