Home / 142,854.04-197,134.28-78,321.94

Finding the Fourth Proportional to 142,854.04, 197,134.28 and 78,321.94

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Solution

The fourth proportional to 142,854.04, 197,134.28 and 78,321.94 is: 108,081.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,854.04 : 197,134.28 = 78,321.94 : x
  2. Step 2: Convert to fraction form
    142,854.04/197,134.28 = 78,321.94/x
  3. Step 3: Cross multiply
    142,854.04x = 197,134.28 × 78,321.94
  4. Step 4: Simplify right side
    142,854.04x = 15,439,939,250.10
  5. Step 5: Solve for x
    x = 15,439,939,250.10/142,854.04
  6. Step 6: Final answer
    x = 108,081.92

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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.