Home / 165,392.15-247,858.38-86,348.70

Finding the Fourth Proportional to 165,392.15, 247,858.38 and 86,348.70

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Solution

The fourth proportional to 165,392.15, 247,858.38 and 86,348.70 is: 129,403.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,392.15 : 247,858.38 = 86,348.70 : x
  2. Step 2: Convert to fraction form
    165,392.15/247,858.38 = 86,348.70/x
  3. Step 3: Cross multiply
    165,392.15x = 247,858.38 × 86,348.70
  4. Step 4: Simplify right side
    165,392.15x = 21,402,248,897.11
  5. Step 5: Solve for x
    x = 21,402,248,897.11/165,392.15
  6. Step 6: Final answer
    x = 129,403.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.