Home / 121,037.76-181,630.62-71,215.20

Finding the Fourth Proportional to 121,037.76, 181,630.62 and 71,215.20

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Solution

The fourth proportional to 121,037.76, 181,630.62 and 71,215.20 is: 106,866.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,037.76 : 181,630.62 = 71,215.20 : x
  2. Step 2: Convert to fraction form
    121,037.76/181,630.62 = 71,215.20/x
  3. Step 3: Cross multiply
    121,037.76x = 181,630.62 × 71,215.20
  4. Step 4: Simplify right side
    121,037.76x = 12,934,860,929.42
  5. Step 5: Solve for x
    x = 12,934,860,929.42/121,037.76
  6. Step 6: Final answer
    x = 106,866.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.