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Finding the Fourth Proportional to 125,102.82, 172,641.57 and 67,742.19

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Solution

The fourth proportional to 125,102.82, 172,641.57 and 67,742.19 is: 93,484.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,102.82 : 172,641.57 = 67,742.19 : x
  2. Step 2: Convert to fraction form
    125,102.82/172,641.57 = 67,742.19/x
  3. Step 3: Cross multiply
    125,102.82x = 172,641.57 × 67,742.19
  4. Step 4: Simplify right side
    125,102.82x = 11,695,118,036.84
  5. Step 5: Solve for x
    x = 11,695,118,036.84/125,102.82
  6. Step 6: Final answer
    x = 93,484.05

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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.