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Finding the Fourth Proportional to 124,878.96, 172,307.40 and 73,866.48

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Solution

The fourth proportional to 124,878.96, 172,307.40 and 73,866.48 is: 101,920.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,878.96 : 172,307.40 = 73,866.48 : x
  2. Step 2: Convert to fraction form
    124,878.96/172,307.40 = 73,866.48/x
  3. Step 3: Cross multiply
    124,878.96x = 172,307.40 × 73,866.48
  4. Step 4: Simplify right side
    124,878.96x = 12,727,741,115.95
  5. Step 5: Solve for x
    x = 12,727,741,115.95/124,878.96
  6. Step 6: Final answer
    x = 101,920.62

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1.5x scale

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.