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Finding the Fourth Proportional to 88,912.60, 133,368.90 and 84,830.20

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Solution

The fourth proportional to 88,912.60, 133,368.90 and 84,830.20 is: 127,245.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,912.60 : 133,368.90 = 84,830.20 : x
  2. Step 2: Convert to fraction form
    88,912.60/133,368.90 = 84,830.20/x
  3. Step 3: Cross multiply
    88,912.60x = 133,368.90 × 84,830.20
  4. Step 4: Simplify right side
    88,912.60x = 11,313,710,460.78
  5. Step 5: Solve for x
    x = 11,313,710,460.78/88,912.60
  6. Step 6: Final answer
    x = 127,245.30

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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.