Home / 158,141.49-218,306.51-100,857.68

Finding the Fourth Proportional to 158,141.49, 218,306.51 and 100,857.68

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Solution

The fourth proportional to 158,141.49, 218,306.51 and 100,857.68 is: 139,229.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,141.49 : 218,306.51 = 100,857.68 : x
  2. Step 2: Convert to fraction form
    158,141.49/218,306.51 = 100,857.68/x
  3. Step 3: Cross multiply
    158,141.49x = 218,306.51 × 100,857.68
  4. Step 4: Simplify right side
    158,141.49x = 22,017,888,127.50
  5. Step 5: Solve for x
    x = 22,017,888,127.50/158,141.49
  6. Step 6: Final answer
    x = 139,229.04

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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.