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Finding the Fourth Proportional to 98,132.80, 147,218.40 and 41,972.80

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Solution

The fourth proportional to 98,132.80, 147,218.40 and 41,972.80 is: 62,967.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,132.80 : 147,218.40 = 41,972.80 : x
  2. Step 2: Convert to fraction form
    98,132.80/147,218.40 = 41,972.80/x
  3. Step 3: Cross multiply
    98,132.80x = 147,218.40 × 41,972.80
  4. Step 4: Simplify right side
    98,132.80x = 6,179,168,459.52
  5. Step 5: Solve for x
    x = 6,179,168,459.52/98,132.80
  6. Step 6: Final answer
    x = 62,967.41

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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.