Home / 124,750.19-172,106.33-76,920.50

Finding the Fourth Proportional to 124,750.19, 172,106.33 and 76,920.50

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Solution

The fourth proportional to 124,750.19, 172,106.33 and 76,920.50 is: 106,120.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,750.19 : 172,106.33 = 76,920.50 : x
  2. Step 2: Convert to fraction form
    124,750.19/172,106.33 = 76,920.50/x
  3. Step 3: Cross multiply
    124,750.19x = 172,106.33 × 76,920.50
  4. Step 4: Simplify right side
    124,750.19x = 13,238,503,711.63
  5. Step 5: Solve for x
    x = 13,238,503,711.63/124,750.19
  6. Step 6: Final answer
    x = 106,120.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.