Home / 205,056.80-307,628.40-86,667.20

Finding the Fourth Proportional to 205,056.80, 307,628.40 and 86,667.20

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Solution

The fourth proportional to 205,056.80, 307,628.40 and 86,667.20 is: 130,019.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,056.80 : 307,628.40 = 86,667.20 : x
  2. Step 2: Convert to fraction form
    205,056.80/307,628.40 = 86,667.20/x
  3. Step 3: Cross multiply
    205,056.80x = 307,628.40 × 86,667.20
  4. Step 4: Simplify right side
    205,056.80x = 26,661,292,068.48
  5. Step 5: Solve for x
    x = 26,661,292,068.48/205,056.80
  6. Step 6: Final answer
    x = 130,019.06

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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.