Home / 158,722.12-219,039.18-87,108.80

Finding the Fourth Proportional to 158,722.12, 219,039.18 and 87,108.80

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Solution

The fourth proportional to 158,722.12, 219,039.18 and 87,108.80 is: 120,211.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,722.12 : 219,039.18 = 87,108.80 : x
  2. Step 2: Convert to fraction form
    158,722.12/219,039.18 = 87,108.80/x
  3. Step 3: Cross multiply
    158,722.12x = 219,039.18 × 87,108.80
  4. Step 4: Simplify right side
    158,722.12x = 19,080,240,122.78
  5. Step 5: Solve for x
    x = 19,080,240,122.78/158,722.12
  6. Step 6: Final answer
    x = 120,211.60

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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.