Home / 121,890.60-182,943.90-71,908.20

Finding the Fourth Proportional to 121,890.60, 182,943.90 and 71,908.20

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Solution

The fourth proportional to 121,890.60, 182,943.90 and 71,908.20 is: 107,926.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,890.60 : 182,943.90 = 71,908.20 : x
  2. Step 2: Convert to fraction form
    121,890.60/182,943.90 = 71,908.20/x
  3. Step 3: Cross multiply
    121,890.60x = 182,943.90 × 71,908.20
  4. Step 4: Simplify right side
    121,890.60x = 13,155,166,549.98
  5. Step 5: Solve for x
    x = 13,155,166,549.98/121,890.60
  6. Step 6: Final answer
    x = 107,926.01

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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.