Home / 142,288.02-196,354.68-78,624.42

Finding the Fourth Proportional to 142,288.02, 196,354.68 and 78,624.42

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Solution

The fourth proportional to 142,288.02, 196,354.68 and 78,624.42 is: 108,500.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,288.02 : 196,354.68 = 78,624.42 : x
  2. Step 2: Convert to fraction form
    142,288.02/196,354.68 = 78,624.42/x
  3. Step 3: Cross multiply
    142,288.02x = 196,354.68 × 78,624.42
  4. Step 4: Simplify right side
    142,288.02x = 15,438,272,829.29
  5. Step 5: Solve for x
    x = 15,438,272,829.29/142,288.02
  6. Step 6: Final answer
    x = 108,500.16

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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.