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Finding the Fourth Proportional to 136,250.10, 188,009.10 and 78,877.80

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Solution

The fourth proportional to 136,250.10, 188,009.10 and 78,877.80 is: 108,842.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,250.10 : 188,009.10 = 78,877.80 : x
  2. Step 2: Convert to fraction form
    136,250.10/188,009.10 = 78,877.80/x
  3. Step 3: Cross multiply
    136,250.10x = 188,009.10 × 78,877.80
  4. Step 4: Simplify right side
    136,250.10x = 14,829,744,187.98
  5. Step 5: Solve for x
    x = 14,829,744,187.98/136,250.10
  6. Step 6: Final answer
    x = 108,842.08

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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.