Home / 99,103.61-136,763.07-53,781.59

Finding the Fourth Proportional to 99,103.61, 136,763.07 and 53,781.59

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Solution

The fourth proportional to 99,103.61, 136,763.07 and 53,781.59 is: 74,218.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,103.61 : 136,763.07 = 53,781.59 : x
  2. Step 2: Convert to fraction form
    99,103.61/136,763.07 = 53,781.59/x
  3. Step 3: Cross multiply
    99,103.61x = 136,763.07 × 53,781.59
  4. Step 4: Simplify right side
    99,103.61x = 7,355,335,699.79
  5. Step 5: Solve for x
    x = 7,355,335,699.79/99,103.61
  6. Step 6: Final answer
    x = 74,218.64

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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.