Home / 121,708.71-182,315.21-99,299.25

Finding the Fourth Proportional to 121,708.71, 182,315.21 and 99,299.25

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Solution

The fourth proportional to 121,708.71, 182,315.21 and 99,299.25 is: 148,746.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,708.71 : 182,315.21 = 99,299.25 : x
  2. Step 2: Convert to fraction form
    121,708.71/182,315.21 = 99,299.25/x
  3. Step 3: Cross multiply
    121,708.71x = 182,315.21 × 99,299.25
  4. Step 4: Simplify right side
    121,708.71x = 18,103,763,120.10
  5. Step 5: Solve for x
    x = 18,103,763,120.10/121,708.71
  6. Step 6: Final answer
    x = 148,746.65

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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.