Home / 124,684.10-172,065.15-70,972.57

Finding the Fourth Proportional to 124,684.10, 172,065.15 and 70,972.57

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Solution

The fourth proportional to 124,684.10, 172,065.15 and 70,972.57 is: 97,942.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,684.10 : 172,065.15 = 70,972.57 : x
  2. Step 2: Convert to fraction form
    124,684.10/172,065.15 = 70,972.57/x
  3. Step 3: Cross multiply
    124,684.10x = 172,065.15 × 70,972.57
  4. Step 4: Simplify right side
    124,684.10x = 12,211,906,317.63
  5. Step 5: Solve for x
    x = 12,211,906,317.63/124,684.10
  6. Step 6: Final answer
    x = 97,942.77

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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.