Home / 121,421.70-182,132.55-106,659.45

Finding the Fourth Proportional to 121,421.70, 182,132.55 and 106,659.45

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Solution

The fourth proportional to 121,421.70, 182,132.55 and 106,659.45 is: 159,989.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,421.70 : 182,132.55 = 106,659.45 : x
  2. Step 2: Convert to fraction form
    121,421.70/182,132.55 = 106,659.45/x
  3. Step 3: Cross multiply
    121,421.70x = 182,132.55 × 106,659.45
  4. Step 4: Simplify right side
    121,421.70x = 19,426,157,610.10
  5. Step 5: Solve for x
    x = 19,426,157,610.10/121,421.70
  6. Step 6: Final answer
    x = 159,989.18

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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.