Home / 165,818.16-228,284.60-138,918.06

Finding the Fourth Proportional to 165,818.16, 228,284.60 and 138,918.06

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Solution

The fourth proportional to 165,818.16, 228,284.60 and 138,918.06 is: 191,250.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,818.16 : 228,284.60 = 138,918.06 : x
  2. Step 2: Convert to fraction form
    165,818.16/228,284.60 = 138,918.06/x
  3. Step 3: Cross multiply
    165,818.16x = 228,284.60 × 138,918.06
  4. Step 4: Simplify right side
    165,818.16x = 31,712,853,065.29
  5. Step 5: Solve for x
    x = 31,712,853,065.29/165,818.16
  6. Step 6: Final answer
    x = 191,250.78

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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.