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Finding the Fourth Proportional to 98,681.03, 147,769.28 and 54,258.94

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Solution

The fourth proportional to 98,681.03, 147,769.28 and 54,258.94 is: 81,249.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,681.03 : 147,769.28 = 54,258.94 : x
  2. Step 2: Convert to fraction form
    98,681.03/147,769.28 = 54,258.94/x
  3. Step 3: Cross multiply
    98,681.03x = 147,769.28 × 54,258.94
  4. Step 4: Simplify right side
    98,681.03x = 8,017,804,497.36
  5. Step 5: Solve for x
    x = 8,017,804,497.36/98,681.03
  6. Step 6: Final answer
    x = 81,249.70

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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.