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Finding the Fourth Proportional to 98,753.61, 148,130.42 and 54,357.51

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Solution

The fourth proportional to 98,753.61, 148,130.42 and 54,357.51 is: 81,536.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,753.61 : 148,130.42 = 54,357.51 : x
  2. Step 2: Convert to fraction form
    98,753.61/148,130.42 = 54,357.51/x
  3. Step 3: Cross multiply
    98,753.61x = 148,130.42 × 54,357.51
  4. Step 4: Simplify right side
    98,753.61x = 8,052,000,786.45
  5. Step 5: Solve for x
    x = 8,052,000,786.45/98,753.61
  6. Step 6: Final answer
    x = 81,536.27

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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.