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Finding the Fourth Proportional to 133,075.65, 199,613.48 and 39,581.40

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Solution

The fourth proportional to 133,075.65, 199,613.48 and 39,581.40 is: 59,372.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,075.65 : 199,613.48 = 39,581.40 : x
  2. Step 2: Convert to fraction form
    133,075.65/199,613.48 = 39,581.40/x
  3. Step 3: Cross multiply
    133,075.65x = 199,613.48 × 39,581.40
  4. Step 4: Simplify right side
    133,075.65x = 7,900,980,799.37
  5. Step 5: Solve for x
    x = 7,900,980,799.37/133,075.65
  6. Step 6: Final answer
    x = 59,372.10

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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.