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Finding the Fourth Proportional to 88,692.40, 133,038.60 and 76,769.20

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Solution

The fourth proportional to 88,692.40, 133,038.60 and 76,769.20 is: 115,153.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,692.40 : 133,038.60 = 76,769.20 : x
  2. Step 2: Convert to fraction form
    88,692.40/133,038.60 = 76,769.20/x
  3. Step 3: Cross multiply
    88,692.40x = 133,038.60 × 76,769.20
  4. Step 4: Simplify right side
    88,692.40x = 10,213,266,891.12
  5. Step 5: Solve for x
    x = 10,213,266,891.12/88,692.40
  6. Step 6: Final answer
    x = 115,153.80

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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.