Home / 205,056.30-307,627.65-86,666.70

Finding the Fourth Proportional to 205,056.30, 307,627.65 and 86,666.70

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Solution

The fourth proportional to 205,056.30, 307,627.65 and 86,666.70 is: 130,018.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,056.30 : 307,627.65 = 86,666.70 : x
  2. Step 2: Convert to fraction form
    205,056.30/307,627.65 = 86,666.70/x
  3. Step 3: Cross multiply
    205,056.30x = 307,627.65 × 86,666.70
  4. Step 4: Simplify right side
    205,056.30x = 26,661,073,254.26
  5. Step 5: Solve for x
    x = 26,661,073,254.26/205,056.30
  6. Step 6: Final answer
    x = 130,018.31

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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.