Home / 158,718.98-219,031.55-87,100.20

Finding the Fourth Proportional to 158,718.98, 219,031.55 and 87,100.20

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Solution

The fourth proportional to 158,718.98, 219,031.55 and 87,100.20 is: 120,197.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,718.98 : 219,031.55 = 87,100.20 : x
  2. Step 2: Convert to fraction form
    158,718.98/219,031.55 = 87,100.20/x
  3. Step 3: Cross multiply
    158,718.98x = 219,031.55 × 87,100.20
  4. Step 4: Simplify right side
    158,718.98x = 19,077,690,280.65
  5. Step 5: Solve for x
    x = 19,077,690,280.65/158,718.98
  6. Step 6: Final answer
    x = 120,197.91

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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.