Home / 135,703.34-187,279.08-78,353.15

Finding the Fourth Proportional to 135,703.34, 187,279.08 and 78,353.15

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Solution

The fourth proportional to 135,703.34, 187,279.08 and 78,353.15 is: 108,132.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,703.34 : 187,279.08 = 78,353.15 : x
  2. Step 2: Convert to fraction form
    135,703.34/187,279.08 = 78,353.15/x
  3. Step 3: Cross multiply
    135,703.34x = 187,279.08 × 78,353.15
  4. Step 4: Simplify right side
    135,703.34x = 14,673,904,910.71
  5. Step 5: Solve for x
    x = 14,673,904,910.71/135,703.34
  6. Step 6: Final answer
    x = 108,132.24

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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.