Home / 145,490.09-218,351.77-75,389.45

Finding the Fourth Proportional to 145,490.09, 218,351.77 and 75,389.45

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Solution

The fourth proportional to 145,490.09, 218,351.77 and 75,389.45 is: 113,144.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,490.09 : 218,351.77 = 75,389.45 : x
  2. Step 2: Convert to fraction form
    145,490.09/218,351.77 = 75,389.45/x
  3. Step 3: Cross multiply
    145,490.09x = 218,351.77 × 75,389.45
  4. Step 4: Simplify right side
    145,490.09x = 16,461,418,566.59
  5. Step 5: Solve for x
    x = 16,461,418,566.59/145,490.09
  6. Step 6: Final answer
    x = 113,144.61

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1.5x scale

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.