Home / 145,384.40-218,076.60-120,501.20

Finding the Fourth Proportional to 145,384.40, 218,076.60 and 120,501.20

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Solution

The fourth proportional to 145,384.40, 218,076.60 and 120,501.20 is: 180,751.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,384.40 : 218,076.60 = 120,501.20 : x
  2. Step 2: Convert to fraction form
    145,384.40/218,076.60 = 120,501.20/x
  3. Step 3: Cross multiply
    145,384.40x = 218,076.60 × 120,501.20
  4. Step 4: Simplify right side
    145,384.40x = 26,278,491,991.92
  5. Step 5: Solve for x
    x = 26,278,491,991.92/145,384.40
  6. Step 6: Final answer
    x = 180,751.80

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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.