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Finding the Fourth Proportional to 98,058.48, 135,156.24 and 75,080.40

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Solution

The fourth proportional to 98,058.48, 135,156.24 and 75,080.40 is: 103,485.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,058.48 : 135,156.24 = 75,080.40 : x
  2. Step 2: Convert to fraction form
    98,058.48/135,156.24 = 75,080.40/x
  3. Step 3: Cross multiply
    98,058.48x = 135,156.24 × 75,080.40
  4. Step 4: Simplify right side
    98,058.48x = 10,147,584,561.70
  5. Step 5: Solve for x
    x = 10,147,584,561.70/98,058.48
  6. Step 6: Final answer
    x = 103,485.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.