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Finding the Fourth Proportional to 142,527.52, 196,685.04 and 78,861.52

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Solution

The fourth proportional to 142,527.52, 196,685.04 and 78,861.52 is: 108,827.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,527.52 : 196,685.04 = 78,861.52 : x
  2. Step 2: Convert to fraction form
    142,527.52/196,685.04 = 78,861.52/x
  3. Step 3: Cross multiply
    142,527.52x = 196,685.04 × 78,861.52
  4. Step 4: Simplify right side
    142,527.52x = 15,510,881,215.66
  5. Step 5: Solve for x
    x = 15,510,881,215.66/142,527.52
  6. Step 6: Final answer
    x = 108,827.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.