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Finding the Fourth Proportional to 99,109.56, 136,884.75 and 65,269.28

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Solution

The fourth proportional to 99,109.56, 136,884.75 and 65,269.28 is: 90,146.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,109.56 : 136,884.75 = 65,269.28 : x
  2. Step 2: Convert to fraction form
    99,109.56/136,884.75 = 65,269.28/x
  3. Step 3: Cross multiply
    99,109.56x = 136,884.75 × 65,269.28
  4. Step 4: Simplify right side
    99,109.56x = 8,934,369,075.48
  5. Step 5: Solve for x
    x = 8,934,369,075.48/99,109.56
  6. Step 6: Final answer
    x = 90,146.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.