Home / 105,740.40-158,572.20-53,132.40

Finding the Fourth Proportional to 105,740.40, 158,572.20 and 53,132.40

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Solution

The fourth proportional to 105,740.40, 158,572.20 and 53,132.40 is: 79,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,740.40 : 158,572.20 = 53,132.40 : x
  2. Step 2: Convert to fraction form
    105,740.40/158,572.20 = 53,132.40/x
  3. Step 3: Cross multiply
    105,740.40x = 158,572.20 × 53,132.40
  4. Step 4: Simplify right side
    105,740.40x = 8,425,321,559.28
  5. Step 5: Solve for x
    x = 8,425,321,559.28/105,740.40
  6. Step 6: Final answer
    x = 79,679.30

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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.