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Finding the Fourth Proportional to 125,005.36, 172,507.86 and 67,644.69

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Solution

The fourth proportional to 125,005.36, 172,507.86 and 67,644.69 is: 93,349.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,005.36 : 172,507.86 = 67,644.69 : x
  2. Step 2: Convert to fraction form
    125,005.36/172,507.86 = 67,644.69/x
  3. Step 3: Cross multiply
    125,005.36x = 172,507.86 × 67,644.69
  4. Step 4: Simplify right side
    125,005.36x = 11,669,239,849.72
  5. Step 5: Solve for x
    x = 11,669,239,849.72/125,005.36
  6. Step 6: Final answer
    x = 93,349.92

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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.