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Finding the Fourth Proportional to 98,220.89, 147,395.87 and 53,878.79

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Solution

The fourth proportional to 98,220.89, 147,395.87 and 53,878.79 is: 80,853.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,220.89 : 147,395.87 = 53,878.79 : x
  2. Step 2: Convert to fraction form
    98,220.89/147,395.87 = 53,878.79/x
  3. Step 3: Cross multiply
    98,220.89x = 147,395.87 × 53,878.79
  4. Step 4: Simplify right side
    98,220.89x = 7,941,510,857.20
  5. Step 5: Solve for x
    x = 7,941,510,857.20/98,220.89
  6. Step 6: Final answer
    x = 80,853.58

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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.