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Finding the Fourth Proportional to 125,146.72, 172,701.09 and 67,784.62

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Solution

The fourth proportional to 125,146.72, 172,701.09 and 67,784.62 is: 93,542.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,146.72 : 172,701.09 = 67,784.62 : x
  2. Step 2: Convert to fraction form
    125,146.72/172,701.09 = 67,784.62/x
  3. Step 3: Cross multiply
    125,146.72x = 172,701.09 × 67,784.62
  4. Step 4: Simplify right side
    125,146.72x = 11,706,477,759.24
  5. Step 5: Solve for x
    x = 11,706,477,759.24/125,146.72
  6. Step 6: Final answer
    x = 93,542.03

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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.