Home / 105,678.38-158,538.29-39,119.07

Finding the Fourth Proportional to 105,678.38, 158,538.29 and 39,119.07

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Solution

The fourth proportional to 105,678.38, 158,538.29 and 39,119.07 is: 58,686.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,678.38 : 158,538.29 = 39,119.07 : x
  2. Step 2: Convert to fraction form
    105,678.38/158,538.29 = 39,119.07/x
  3. Step 3: Cross multiply
    105,678.38x = 158,538.29 × 39,119.07
  4. Step 4: Simplify right side
    105,678.38x = 6,201,870,464.19
  5. Step 5: Solve for x
    x = 6,201,870,464.19/105,678.38
  6. Step 6: Final answer
    x = 58,686.27

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1.5x scale

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.