Home / 136,581.53-188,459.66-76,138.92

Finding the Fourth Proportional to 136,581.53, 188,459.66 and 76,138.92

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Solution

The fourth proportional to 136,581.53, 188,459.66 and 76,138.92 is: 105,058.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,581.53 : 188,459.66 = 76,138.92 : x
  2. Step 2: Convert to fraction form
    136,581.53/188,459.66 = 76,138.92/x
  3. Step 3: Cross multiply
    136,581.53x = 188,459.66 × 76,138.92
  4. Step 4: Simplify right side
    136,581.53x = 14,349,115,166.31
  5. Step 5: Solve for x
    x = 14,349,115,166.31/136,581.53
  6. Step 6: Final answer
    x = 105,058.98

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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.