Home / 115,380.14-159,211.02-66,970.88

Finding the Fourth Proportional to 115,380.14, 159,211.02 and 66,970.88

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Solution

The fourth proportional to 115,380.14, 159,211.02 and 66,970.88 is: 92,411.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,380.14 : 159,211.02 = 66,970.88 : x
  2. Step 2: Convert to fraction form
    115,380.14/159,211.02 = 66,970.88/x
  3. Step 3: Cross multiply
    115,380.14x = 159,211.02 × 66,970.88
  4. Step 4: Simplify right side
    115,380.14x = 10,662,502,115.10
  5. Step 5: Solve for x
    x = 10,662,502,115.10/115,380.14
  6. Step 6: Final answer
    x = 92,411.94

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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.