Home / 119,856.97-165,332.78-76,821.13

Finding the Fourth Proportional to 119,856.97, 165,332.78 and 76,821.13

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Solution

The fourth proportional to 119,856.97, 165,332.78 and 76,821.13 is: 105,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,856.97 : 165,332.78 = 76,821.13 : x
  2. Step 2: Convert to fraction form
    119,856.97/165,332.78 = 76,821.13/x
  3. Step 3: Cross multiply
    119,856.97x = 165,332.78 × 76,821.13
  4. Step 4: Simplify right side
    119,856.97x = 12,701,050,985.64
  5. Step 5: Solve for x
    x = 12,701,050,985.64/119,856.97
  6. Step 6: Final answer
    x = 105,968.40

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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.