Home / 98,431.20-147,549.60-39,187.80

Finding the Fourth Proportional to 98,431.20, 147,549.60 and 39,187.80

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Solution

The fourth proportional to 98,431.20, 147,549.60 and 39,187.80 is: 58,743.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,431.20 : 147,549.60 = 39,187.80 : x
  2. Step 2: Convert to fraction form
    98,431.20/147,549.60 = 39,187.80/x
  3. Step 3: Cross multiply
    98,431.20x = 147,549.60 × 39,187.80
  4. Step 4: Simplify right side
    98,431.20x = 5,782,144,214.88
  5. Step 5: Solve for x
    x = 5,782,144,214.88/98,431.20
  6. Step 6: Final answer
    x = 58,743.00

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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.