Home / 142,235.28-196,281.90-78,572.52

Finding the Fourth Proportional to 142,235.28, 196,281.90 and 78,572.52

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Solution

The fourth proportional to 142,235.28, 196,281.90 and 78,572.52 is: 108,428.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,235.28 : 196,281.90 = 78,572.52 : x
  2. Step 2: Convert to fraction form
    142,235.28/196,281.90 = 78,572.52/x
  3. Step 3: Cross multiply
    142,235.28x = 196,281.90 × 78,572.52
  4. Step 4: Simplify right side
    142,235.28x = 15,422,363,513.39
  5. Step 5: Solve for x
    x = 15,422,363,513.39/142,235.28
  6. Step 6: Final answer
    x = 108,428.54

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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.