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Finding the Fourth Proportional to 97,336.80, 146,312.40 and 91,807.20

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Solution

The fourth proportional to 97,336.80, 146,312.40 and 91,807.20 is: 138,000.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,336.80 : 146,312.40 = 91,807.20 : x
  2. Step 2: Convert to fraction form
    97,336.80/146,312.40 = 91,807.20/x
  3. Step 3: Cross multiply
    97,336.80x = 146,312.40 × 91,807.20
  4. Step 4: Simplify right side
    97,336.80x = 13,432,531,769.28
  5. Step 5: Solve for x
    x = 13,432,531,769.28/97,336.80
  6. Step 6: Final answer
    x = 138,000.55

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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.