Home / 100,016.56-137,897.40-64,143.28

Finding the Fourth Proportional to 100,016.56, 137,897.40 and 64,143.28

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Solution

The fourth proportional to 100,016.56, 137,897.40 and 64,143.28 is: 88,437.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,016.56 : 137,897.40 = 64,143.28 : x
  2. Step 2: Convert to fraction form
    100,016.56/137,897.40 = 64,143.28/x
  3. Step 3: Cross multiply
    100,016.56x = 137,897.40 × 64,143.28
  4. Step 4: Simplify right side
    100,016.56x = 8,845,191,539.47
  5. Step 5: Solve for x
    x = 8,845,191,539.47/100,016.56
  6. Step 6: Final answer
    x = 88,437.27

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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.