Home / 99,140.68-136,814.16-53,818.62

Finding the Fourth Proportional to 99,140.68, 136,814.16 and 53,818.62

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Solution

The fourth proportional to 99,140.68, 136,814.16 and 53,818.62 is: 74,269.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,140.68 : 136,814.16 = 53,818.62 : x
  2. Step 2: Convert to fraction form
    99,140.68/136,814.16 = 53,818.62/x
  3. Step 3: Cross multiply
    99,140.68x = 136,814.16 × 53,818.62
  4. Step 4: Simplify right side
    99,140.68x = 7,363,149,287.66
  5. Step 5: Solve for x
    x = 7,363,149,287.66/99,140.68
  6. Step 6: Final answer
    x = 74,269.71

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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.