Home / 158,018.12-218,063.50-86,397.38

Finding the Fourth Proportional to 158,018.12, 218,063.50 and 86,397.38

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Solution

The fourth proportional to 158,018.12, 218,063.50 and 86,397.38 is: 119,227.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,018.12 : 218,063.50 = 86,397.38 : x
  2. Step 2: Convert to fraction form
    158,018.12/218,063.50 = 86,397.38/x
  3. Step 3: Cross multiply
    158,018.12x = 218,063.50 × 86,397.38
  4. Step 4: Simplify right side
    158,018.12x = 18,840,115,073.63
  5. Step 5: Solve for x
    x = 18,840,115,073.63/158,018.12
  6. Step 6: Final answer
    x = 119,227.56

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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.