Home / 138,730.40-208,057.20-55,632.80

Finding the Fourth Proportional to 138,730.40, 208,057.20 and 55,632.80

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Solution

The fourth proportional to 138,730.40, 208,057.20 and 55,632.80 is: 83,433.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,730.40 : 208,057.20 = 55,632.80 : x
  2. Step 2: Convert to fraction form
    138,730.40/208,057.20 = 55,632.80/x
  3. Step 3: Cross multiply
    138,730.40x = 208,057.20 × 55,632.80
  4. Step 4: Simplify right side
    138,730.40x = 11,574,804,596.16
  5. Step 5: Solve for x
    x = 11,574,804,596.16/138,730.40
  6. Step 6: Final answer
    x = 83,433.80

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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.