Home / 121,314.20-181,539.30-76,962.20

Finding the Fourth Proportional to 121,314.20, 181,539.30 and 76,962.20

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Solution

The fourth proportional to 121,314.20, 181,539.30 and 76,962.20 is: 115,169.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,314.20 : 181,539.30 = 76,962.20 : x
  2. Step 2: Convert to fraction form
    121,314.20/181,539.30 = 76,962.20/x
  3. Step 3: Cross multiply
    121,314.20x = 181,539.30 × 76,962.20
  4. Step 4: Simplify right side
    121,314.20x = 13,971,663,914.46
  5. Step 5: Solve for x
    x = 13,971,663,914.46/121,314.20
  6. Step 6: Final answer
    x = 115,169.24

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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.