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Finding the Fourth Proportional to 142,484.40, 213,776.16 and 53,763.48

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Solution

The fourth proportional to 142,484.40, 213,776.16 and 53,763.48 is: 80,663.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,484.40 : 213,776.16 = 53,763.48 : x
  2. Step 2: Convert to fraction form
    142,484.40/213,776.16 = 53,763.48/x
  3. Step 3: Cross multiply
    142,484.40x = 213,776.16 × 53,763.48
  4. Step 4: Simplify right side
    142,484.40x = 11,493,350,302.64
  5. Step 5: Solve for x
    x = 11,493,350,302.64/142,484.40
  6. Step 6: Final answer
    x = 80,663.92

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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.