Home / 158,700.57-219,006.18-87,081.78

Finding the Fourth Proportional to 158,700.57, 219,006.18 and 87,081.78

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Solution

The fourth proportional to 158,700.57, 219,006.18 and 87,081.78 is: 120,172.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,700.57 : 219,006.18 = 87,081.78 : x
  2. Step 2: Convert to fraction form
    158,700.57/219,006.18 = 87,081.78/x
  3. Step 3: Cross multiply
    158,700.57x = 219,006.18 × 87,081.78
  4. Step 4: Simplify right side
    158,700.57x = 19,071,448,806.67
  5. Step 5: Solve for x
    x = 19,071,448,806.67/158,700.57
  6. Step 6: Final answer
    x = 120,172.53

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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.