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Finding the Fourth Proportional to 97,752.80, 146,807.40 and 85,505.60

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Solution

The fourth proportional to 97,752.80, 146,807.40 and 85,505.60 is: 128,414.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,752.80 : 146,807.40 = 85,505.60 : x
  2. Step 2: Convert to fraction form
    97,752.80/146,807.40 = 85,505.60/x
  3. Step 3: Cross multiply
    97,752.80x = 146,807.40 × 85,505.60
  4. Step 4: Simplify right side
    97,752.80x = 12,552,854,821.44
  5. Step 5: Solve for x
    x = 12,552,854,821.44/97,752.80
  6. Step 6: Final answer
    x = 128,414.27

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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.