Home / 158,340.92-218,506.18-90,356.64

Finding the Fourth Proportional to 158,340.92, 218,506.18 and 90,356.64

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Solution

The fourth proportional to 158,340.92, 218,506.18 and 90,356.64 is: 124,689.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,340.92 : 218,506.18 = 90,356.64 : x
  2. Step 2: Convert to fraction form
    158,340.92/218,506.18 = 90,356.64/x
  3. Step 3: Cross multiply
    158,340.92x = 218,506.18 × 90,356.64
  4. Step 4: Simplify right side
    158,340.92x = 19,743,484,244.04
  5. Step 5: Solve for x
    x = 19,743,484,244.04/158,340.92
  6. Step 6: Final answer
    x = 124,689.72

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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.