Home / 130,569.69-195,854.55-86,186.07

Finding the Fourth Proportional to 130,569.69, 195,854.55 and 86,186.07

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Solution

The fourth proportional to 130,569.69, 195,854.55 and 86,186.07 is: 129,279.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,569.69 : 195,854.55 = 86,186.07 : x
  2. Step 2: Convert to fraction form
    130,569.69/195,854.55 = 86,186.07/x
  3. Step 3: Cross multiply
    130,569.69x = 195,854.55 × 86,186.07
  4. Step 4: Simplify right side
    130,569.69x = 16,879,933,956.12
  5. Step 5: Solve for x
    x = 16,879,933,956.12/130,569.69
  6. Step 6: Final answer
    x = 129,279.11

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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.