Home / 154,397.19-213,120.68-90,753.87

Finding the Fourth Proportional to 154,397.19, 213,120.68 and 90,753.87

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Solution

The fourth proportional to 154,397.19, 213,120.68 and 90,753.87 is: 125,271.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,397.19 : 213,120.68 = 90,753.87 : x
  2. Step 2: Convert to fraction form
    154,397.19/213,120.68 = 90,753.87/x
  3. Step 3: Cross multiply
    154,397.19x = 213,120.68 × 90,753.87
  4. Step 4: Simplify right side
    154,397.19x = 19,341,526,033.26
  5. Step 5: Solve for x
    x = 19,341,526,033.26/154,397.19
  6. Step 6: Final answer
    x = 125,271.23

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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.