Home / 124,639.40-172,008.96-68,051

Finding the Fourth Proportional to 124,639.40, 172,008.96 and 68,051

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Solution

The fourth proportional to 124,639.40, 172,008.96 and 68,051 is: 93,913.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,639.40 : 172,008.96 = 68,051 : x
  2. Step 2: Convert to fraction form
    124,639.40/172,008.96 = 68,051/x
  3. Step 3: Cross multiply
    124,639.40x = 172,008.96 × 68,051
  4. Step 4: Simplify right side
    124,639.40x = 11,705,381,736.96
  5. Step 5: Solve for x
    x = 11,705,381,736.96/124,639.40
  6. Step 6: Final answer
    x = 93,913.98

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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.