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Finding the Fourth Proportional to 98,002.80, 135,240.12 and 53,290.80

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Solution

The fourth proportional to 98,002.80, 135,240.12 and 53,290.80 is: 73,539.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,002.80 : 135,240.12 = 53,290.80 : x
  2. Step 2: Convert to fraction form
    98,002.80/135,240.12 = 53,290.80/x
  3. Step 3: Cross multiply
    98,002.80x = 135,240.12 × 53,290.80
  4. Step 4: Simplify right side
    98,002.80x = 7,207,054,186.90
  5. Step 5: Solve for x
    x = 7,207,054,186.90/98,002.80
  6. Step 6: Final answer
    x = 73,539.27

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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.