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Finding the Fourth Proportional to 97,328.80, 146,300.40 and 91,799.20

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Solution

The fourth proportional to 97,328.80, 146,300.40 and 91,799.20 is: 137,988.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,328.80 : 146,300.40 = 91,799.20 : x
  2. Step 2: Convert to fraction form
    97,328.80/146,300.40 = 91,799.20/x
  3. Step 3: Cross multiply
    97,328.80x = 146,300.40 × 91,799.20
  4. Step 4: Simplify right side
    97,328.80x = 13,430,259,679.68
  5. Step 5: Solve for x
    x = 13,430,259,679.68/97,328.80
  6. Step 6: Final answer
    x = 137,988.55

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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.