Home / 138,730.57-208,122.09-43,984.60

Finding the Fourth Proportional to 138,730.57, 208,122.09 and 43,984.60

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Solution

The fourth proportional to 138,730.57, 208,122.09 and 43,984.60 is: 65,985.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,730.57 : 208,122.09 = 43,984.60 : x
  2. Step 2: Convert to fraction form
    138,730.57/208,122.09 = 43,984.60/x
  3. Step 3: Cross multiply
    138,730.57x = 208,122.09 × 43,984.60
  4. Step 4: Simplify right side
    138,730.57x = 9,154,166,708.50
  5. Step 5: Solve for x
    x = 9,154,166,708.50/138,730.57
  6. Step 6: Final answer
    x = 65,985.22

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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.