Home / 152,768.71-229,152.66-86,178.61

Finding the Fourth Proportional to 152,768.71, 229,152.66 and 86,178.61

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Solution

The fourth proportional to 152,768.71, 229,152.66 and 86,178.61 is: 129,267.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,768.71 : 229,152.66 = 86,178.61 : x
  2. Step 2: Convert to fraction form
    152,768.71/229,152.66 = 86,178.61/x
  3. Step 3: Cross multiply
    152,768.71x = 229,152.66 × 86,178.61
  4. Step 4: Simplify right side
    152,768.71x = 19,748,057,716.60
  5. Step 5: Solve for x
    x = 19,748,057,716.60/152,768.71
  6. Step 6: Final answer
    x = 129,267.69

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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.