Home / 145,410.90-218,128.77-40,229.70

Finding the Fourth Proportional to 145,410.90, 218,128.77 and 40,229.70

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Solution

The fourth proportional to 145,410.90, 218,128.77 and 40,229.70 is: 60,347.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,410.90 : 218,128.77 = 40,229.70 : x
  2. Step 2: Convert to fraction form
    145,410.90/218,128.77 = 40,229.70/x
  3. Step 3: Cross multiply
    145,410.90x = 218,128.77 × 40,229.70
  4. Step 4: Simplify right side
    145,410.90x = 8,775,254,978.47
  5. Step 5: Solve for x
    x = 8,775,254,978.47/145,410.90
  6. Step 6: Final answer
    x = 60,347.99

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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.