Home / 125,005.13-172,505.75-67,643.19

Finding the Fourth Proportional to 125,005.13, 172,505.75 and 67,643.19

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Solution

The fourth proportional to 125,005.13, 172,505.75 and 67,643.19 is: 93,346.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,005.13 : 172,505.75 = 67,643.19 : x
  2. Step 2: Convert to fraction form
    125,005.13/172,505.75 = 67,643.19/x
  3. Step 3: Cross multiply
    125,005.13x = 172,505.75 × 67,643.19
  4. Step 4: Simplify right side
    125,005.13x = 11,668,839,392.45
  5. Step 5: Solve for x
    x = 11,668,839,392.45/125,005.13
  6. Step 6: Final answer
    x = 93,346.89

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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.