Home / 102,942.27-142,148.99-64,765.45

Finding the Fourth Proportional to 102,942.27, 142,148.99 and 64,765.45

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Solution

The fourth proportional to 102,942.27, 142,148.99 and 64,765.45 is: 89,432.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,942.27 : 142,148.99 = 64,765.45 : x
  2. Step 2: Convert to fraction form
    102,942.27/142,148.99 = 64,765.45/x
  3. Step 3: Cross multiply
    102,942.27x = 142,148.99 × 64,765.45
  4. Step 4: Simplify right side
    102,942.27x = 9,206,343,079.79
  5. Step 5: Solve for x
    x = 9,206,343,079.79/102,942.27
  6. Step 6: Final answer
    x = 89,432.10

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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.