Home / 145,412.90-218,131.77-40,231.70

Finding the Fourth Proportional to 145,412.90, 218,131.77 and 40,231.70

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Solution

The fourth proportional to 145,412.90, 218,131.77 and 40,231.70 is: 60,350.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,412.90 : 218,131.77 = 40,231.70 : x
  2. Step 2: Convert to fraction form
    145,412.90/218,131.77 = 40,231.70/x
  3. Step 3: Cross multiply
    145,412.90x = 218,131.77 × 40,231.70
  4. Step 4: Simplify right side
    145,412.90x = 8,775,811,931.11
  5. Step 5: Solve for x
    x = 8,775,811,931.11/145,412.90
  6. Step 6: Final answer
    x = 60,350.99

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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.