Home / 101,938.72-140,674.60-55,999.13

Finding the Fourth Proportional to 101,938.72, 140,674.60 and 55,999.13

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Solution

The fourth proportional to 101,938.72, 140,674.60 and 55,999.13 is: 77,278.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,938.72 : 140,674.60 = 55,999.13 : x
  2. Step 2: Convert to fraction form
    101,938.72/140,674.60 = 55,999.13/x
  3. Step 3: Cross multiply
    101,938.72x = 140,674.60 × 55,999.13
  4. Step 4: Simplify right side
    101,938.72x = 7,877,654,721.41
  5. Step 5: Solve for x
    x = 7,877,654,721.41/101,938.72
  6. Step 6: Final answer
    x = 77,278.34

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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.