Home / 121,298.40-181,947.60-76,975.20

Finding the Fourth Proportional to 121,298.40, 181,947.60 and 76,975.20

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Solution

The fourth proportional to 121,298.40, 181,947.60 and 76,975.20 is: 115,462.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,298.40 : 181,947.60 = 76,975.20 : x
  2. Step 2: Convert to fraction form
    121,298.40/181,947.60 = 76,975.20/x
  3. Step 3: Cross multiply
    121,298.40x = 181,947.60 × 76,975.20
  4. Step 4: Simplify right side
    121,298.40x = 14,005,452,899.52
  5. Step 5: Solve for x
    x = 14,005,452,899.52/121,298.40
  6. Step 6: Final answer
    x = 115,462.80

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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.