Home / 145,540.90-218,320.68-45,705.16

Finding the Fourth Proportional to 145,540.90, 218,320.68 and 45,705.16

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Solution

The fourth proportional to 145,540.90, 218,320.68 and 45,705.16 is: 68,560.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,540.90 : 218,320.68 = 45,705.16 : x
  2. Step 2: Convert to fraction form
    145,540.90/218,320.68 = 45,705.16/x
  3. Step 3: Cross multiply
    145,540.90x = 218,320.68 × 45,705.16
  4. Step 4: Simplify right side
    145,540.90x = 9,978,381,610.71
  5. Step 5: Solve for x
    x = 9,978,381,610.71/145,540.90
  6. Step 6: Final answer
    x = 68,560.67

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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.