Home / 135,463.19-186,937.88-78,081.57

Finding the Fourth Proportional to 135,463.19, 186,937.88 and 78,081.57

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Solution

The fourth proportional to 135,463.19, 186,937.88 and 78,081.57 is: 107,751.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,463.19 : 186,937.88 = 78,081.57 : x
  2. Step 2: Convert to fraction form
    135,463.19/186,937.88 = 78,081.57/x
  3. Step 3: Cross multiply
    135,463.19x = 186,937.88 × 78,081.57
  4. Step 4: Simplify right side
    135,463.19x = 14,596,402,772.46
  5. Step 5: Solve for x
    x = 14,596,402,772.46/135,463.19
  6. Step 6: Final answer
    x = 107,751.81

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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.