Home / 135,866.09-187,521.80-86,776.17

Finding the Fourth Proportional to 135,866.09, 187,521.80 and 86,776.17

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Solution

The fourth proportional to 135,866.09, 187,521.80 and 86,776.17 is: 119,768.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,866.09 : 187,521.80 = 86,776.17 : x
  2. Step 2: Convert to fraction form
    135,866.09/187,521.80 = 86,776.17/x
  3. Step 3: Cross multiply
    135,866.09x = 187,521.80 × 86,776.17
  4. Step 4: Simplify right side
    135,866.09x = 16,272,423,161.63
  5. Step 5: Solve for x
    x = 16,272,423,161.63/135,866.09
  6. Step 6: Final answer
    x = 119,768.10

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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.