Home / 141,292.76-212,011.86-78,101.15

Finding the Fourth Proportional to 141,292.76, 212,011.86 and 78,101.15

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Solution

The fourth proportional to 141,292.76, 212,011.86 and 78,101.15 is: 117,191.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,292.76 : 212,011.86 = 78,101.15 : x
  2. Step 2: Convert to fraction form
    141,292.76/212,011.86 = 78,101.15/x
  3. Step 3: Cross multiply
    141,292.76x = 212,011.86 × 78,101.15
  4. Step 4: Simplify right side
    141,292.76x = 16,558,369,019.58
  5. Step 5: Solve for x
    x = 16,558,369,019.58/141,292.76
  6. Step 6: Final answer
    x = 117,191.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.