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Finding the Fourth Proportional to 145,493.70, 218,293.85 and 61,275.06

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Solution

The fourth proportional to 145,493.70, 218,293.85 and 61,275.06 is: 91,935.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,493.70 : 218,293.85 = 61,275.06 : x
  2. Step 2: Convert to fraction form
    145,493.70/218,293.85 = 61,275.06/x
  3. Step 3: Cross multiply
    145,493.70x = 218,293.85 × 61,275.06
  4. Step 4: Simplify right side
    145,493.70x = 13,375,968,756.38
  5. Step 5: Solve for x
    x = 13,375,968,756.38/145,493.70
  6. Step 6: Final answer
    x = 91,935.04

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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.