Home / 103,720.60-155,589.08-51,101.40

Finding the Fourth Proportional to 103,720.60, 155,589.08 and 51,101.40

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Solution

The fourth proportional to 103,720.60, 155,589.08 and 51,101.40 is: 76,656.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,720.60 : 155,589.08 = 51,101.40 : x
  2. Step 2: Convert to fraction form
    103,720.60/155,589.08 = 51,101.40/x
  3. Step 3: Cross multiply
    103,720.60x = 155,589.08 × 51,101.40
  4. Step 4: Simplify right side
    103,720.60x = 7,950,819,812.71
  5. Step 5: Solve for x
    x = 7,950,819,812.71/103,720.60
  6. Step 6: Final answer
    x = 76,656.13

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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.