Home / 158,879.40-219,257.04-87,264.12

Finding the Fourth Proportional to 158,879.40, 219,257.04 and 87,264.12

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Solution

The fourth proportional to 158,879.40, 219,257.04 and 87,264.12 is: 120,426.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,879.40 : 219,257.04 = 87,264.12 : x
  2. Step 2: Convert to fraction form
    158,879.40/219,257.04 = 87,264.12/x
  3. Step 3: Cross multiply
    158,879.40x = 219,257.04 × 87,264.12
  4. Step 4: Simplify right side
    158,879.40x = 19,133,272,649.40
  5. Step 5: Solve for x
    x = 19,133,272,649.40/158,879.40
  6. Step 6: Final answer
    x = 120,426.39

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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.