Home / 158,382.16-218,561.68-90,402.64

Finding the Fourth Proportional to 158,382.16, 218,561.68 and 90,402.64

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Solution

The fourth proportional to 158,382.16, 218,561.68 and 90,402.64 is: 124,752.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,382.16 : 218,561.68 = 90,402.64 : x
  2. Step 2: Convert to fraction form
    158,382.16/218,561.68 = 90,402.64/x
  3. Step 3: Cross multiply
    158,382.16x = 218,561.68 × 90,402.64
  4. Step 4: Simplify right side
    158,382.16x = 19,758,552,874.84
  5. Step 5: Solve for x
    x = 19,758,552,874.84/158,382.16
  6. Step 6: Final answer
    x = 124,752.39

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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.