Home / 124,916.28-172,368.42-76,539.84

Finding the Fourth Proportional to 124,916.28, 172,368.42 and 76,539.84

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Solution

The fourth proportional to 124,916.28, 172,368.42 and 76,539.84 is: 105,615.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,916.28 : 172,368.42 = 76,539.84 : x
  2. Step 2: Convert to fraction form
    124,916.28/172,368.42 = 76,539.84/x
  3. Step 3: Cross multiply
    124,916.28x = 172,368.42 × 76,539.84
  4. Step 4: Simplify right side
    124,916.28x = 13,193,051,287.85
  5. Step 5: Solve for x
    x = 13,193,051,287.85/124,916.28
  6. Step 6: Final answer
    x = 105,615.15

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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.