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Finding the Fourth Proportional to 88,911.20, 133,075.20 and 69,082.40

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Solution

The fourth proportional to 88,911.20, 133,075.20 and 69,082.40 is: 103,397.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,911.20 : 133,075.20 = 69,082.40 : x
  2. Step 2: Convert to fraction form
    88,911.20/133,075.20 = 69,082.40/x
  3. Step 3: Cross multiply
    88,911.20x = 133,075.20 × 69,082.40
  4. Step 4: Simplify right side
    88,911.20x = 9,193,154,196.48
  5. Step 5: Solve for x
    x = 9,193,154,196.48/88,911.20
  6. Step 6: Final answer
    x = 103,397.03

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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.