Home / 142,118.19-196,117.92-78,454.62

Finding the Fourth Proportional to 142,118.19, 196,117.92 and 78,454.62

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Solution

The fourth proportional to 142,118.19, 196,117.92 and 78,454.62 is: 108,264.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,118.19 : 196,117.92 = 78,454.62 : x
  2. Step 2: Convert to fraction form
    142,118.19/196,117.92 = 78,454.62/x
  3. Step 3: Cross multiply
    142,118.19x = 196,117.92 × 78,454.62
  4. Step 4: Simplify right side
    142,118.19x = 15,386,356,888.79
  5. Step 5: Solve for x
    x = 15,386,356,888.79/142,118.19
  6. Step 6: Final answer
    x = 108,264.51

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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.