Home / 142,547.10-196,711.92-78,016.02

Finding the Fourth Proportional to 142,547.10, 196,711.92 and 78,016.02

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Solution

The fourth proportional to 142,547.10, 196,711.92 and 78,016.02 is: 107,660.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,547.10 : 196,711.92 = 78,016.02 : x
  2. Step 2: Convert to fraction form
    142,547.10/196,711.92 = 78,016.02/x
  3. Step 3: Cross multiply
    142,547.10x = 196,711.92 × 78,016.02
  4. Step 4: Simplify right side
    142,547.10x = 15,346,681,084.96
  5. Step 5: Solve for x
    x = 15,346,681,084.96/142,547.10
  6. Step 6: Final answer
    x = 107,660.42

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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.