Home / 105,515.28-158,221.80-38,986.72

Finding the Fourth Proportional to 105,515.28, 158,221.80 and 38,986.72

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Solution

The fourth proportional to 105,515.28, 158,221.80 and 38,986.72 is: 58,461.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,515.28 : 158,221.80 = 38,986.72 : x
  2. Step 2: Convert to fraction form
    105,515.28/158,221.80 = 38,986.72/x
  3. Step 3: Cross multiply
    105,515.28x = 158,221.80 × 38,986.72
  4. Step 4: Simplify right side
    105,515.28x = 6,168,549,014.50
  5. Step 5: Solve for x
    x = 6,168,549,014.50/105,515.28
  6. Step 6: Final answer
    x = 58,461.19

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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.