Home / 138,125.04-190,615.23-80,769.48

Finding the Fourth Proportional to 138,125.04, 190,615.23 and 80,769.48

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Solution

The fourth proportional to 138,125.04, 190,615.23 and 80,769.48 is: 111,463.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,125.04 : 190,615.23 = 80,769.48 : x
  2. Step 2: Convert to fraction form
    138,125.04/190,615.23 = 80,769.48/x
  3. Step 3: Cross multiply
    138,125.04x = 190,615.23 × 80,769.48
  4. Step 4: Simplify right side
    138,125.04x = 15,395,893,007.18
  5. Step 5: Solve for x
    x = 15,395,893,007.18/138,125.04
  6. Step 6: Final answer
    x = 111,463.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.