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Finding the Fourth Proportional to 142,199.96, 213,343.96 and 85,337.36

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Solution

The fourth proportional to 142,199.96, 213,343.96 and 85,337.36 is: 128,032.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,199.96 : 213,343.96 = 85,337.36 : x
  2. Step 2: Convert to fraction form
    142,199.96/213,343.96 = 85,337.36/x
  3. Step 3: Cross multiply
    142,199.96x = 213,343.96 × 85,337.36
  4. Step 4: Simplify right side
    142,199.96x = 18,206,210,318.35
  5. Step 5: Solve for x
    x = 18,206,210,318.35/142,199.96
  6. Step 6: Final answer
    x = 128,032.46

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1.5x scale

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.