Home / 98,780.80-148,171.20-39,625.60

Finding the Fourth Proportional to 98,780.80, 148,171.20 and 39,625.60

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Solution

The fourth proportional to 98,780.80, 148,171.20 and 39,625.60 is: 59,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,780.80 : 148,171.20 = 39,625.60 : x
  2. Step 2: Convert to fraction form
    98,780.80/148,171.20 = 39,625.60/x
  3. Step 3: Cross multiply
    98,780.80x = 148,171.20 × 39,625.60
  4. Step 4: Simplify right side
    98,780.80x = 5,871,372,702.72
  5. Step 5: Solve for x
    x = 5,871,372,702.72/98,780.80
  6. Step 6: Final answer
    x = 59,438.40

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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.