Home / 105,678.38-158,538.28-39,119.08

Finding the Fourth Proportional to 105,678.38, 158,538.28 and 39,119.08

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Solution

The fourth proportional to 105,678.38, 158,538.28 and 39,119.08 is: 58,686.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,678.38 : 158,538.28 = 39,119.08 : x
  2. Step 2: Convert to fraction form
    105,678.38/158,538.28 = 39,119.08/x
  3. Step 3: Cross multiply
    105,678.38x = 158,538.28 × 39,119.08
  4. Step 4: Simplify right side
    105,678.38x = 6,201,871,658.38
  5. Step 5: Solve for x
    x = 6,201,871,658.38/105,678.38
  6. Step 6: Final answer
    x = 58,686.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.