Home / 141,680.47-195,518.08-78,017.75

Finding the Fourth Proportional to 141,680.47, 195,518.08 and 78,017.75

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Solution

The fourth proportional to 141,680.47, 195,518.08 and 78,017.75 is: 107,663.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,680.47 : 195,518.08 = 78,017.75 : x
  2. Step 2: Convert to fraction form
    141,680.47/195,518.08 = 78,017.75/x
  3. Step 3: Cross multiply
    141,680.47x = 195,518.08 × 78,017.75
  4. Step 4: Simplify right side
    141,680.47x = 15,253,880,685.92
  5. Step 5: Solve for x
    x = 15,253,880,685.92/141,680.47
  6. Step 6: Final answer
    x = 107,663.96

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1.5x scale

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.