Home / 115,034.21-158,722.80-72,568.13

Finding the Fourth Proportional to 115,034.21, 158,722.80 and 72,568.13

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Solution

The fourth proportional to 115,034.21, 158,722.80 and 72,568.13 is: 100,128.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,034.21 : 158,722.80 = 72,568.13 : x
  2. Step 2: Convert to fraction form
    115,034.21/158,722.80 = 72,568.13/x
  3. Step 3: Cross multiply
    115,034.21x = 158,722.80 × 72,568.13
  4. Step 4: Simplify right side
    115,034.21x = 11,518,215,990.75
  5. Step 5: Solve for x
    x = 11,518,215,990.75/115,034.21
  6. Step 6: Final answer
    x = 100,128.62

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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.