Home / 124,728.85-172,125.76-67,368.21

Finding the Fourth Proportional to 124,728.85, 172,125.76 and 67,368.21

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Solution

The fourth proportional to 124,728.85, 172,125.76 and 67,368.21 is: 92,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,728.85 : 172,125.76 = 67,368.21 : x
  2. Step 2: Convert to fraction form
    124,728.85/172,125.76 = 67,368.21/x
  3. Step 3: Cross multiply
    124,728.85x = 172,125.76 × 67,368.21
  4. Step 4: Simplify right side
    124,728.85x = 11,595,804,346.09
  5. Step 5: Solve for x
    x = 11,595,804,346.09/124,728.85
  6. Step 6: Final answer
    x = 92,968.10

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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.