Home / 124,986.84-172,302.40-89,114.57

Finding the Fourth Proportional to 124,986.84, 172,302.40 and 89,114.57

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Solution

The fourth proportional to 124,986.84, 172,302.40 and 89,114.57 is: 122,850.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,986.84 : 172,302.40 = 89,114.57 : x
  2. Step 2: Convert to fraction form
    124,986.84/172,302.40 = 89,114.57/x
  3. Step 3: Cross multiply
    124,986.84x = 172,302.40 × 89,114.57
  4. Step 4: Simplify right side
    124,986.84x = 15,354,654,285.97
  5. Step 5: Solve for x
    x = 15,354,654,285.97/124,986.84
  6. Step 6: Final answer
    x = 122,850.17

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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.