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Finding the Fourth Proportional to 101,275.80, 139,764.06 and 63,570.84

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Solution

The fourth proportional to 101,275.80, 139,764.06 and 63,570.84 is: 87,729.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,275.80 : 139,764.06 = 63,570.84 : x
  2. Step 2: Convert to fraction form
    101,275.80/139,764.06 = 63,570.84/x
  3. Step 3: Cross multiply
    101,275.80x = 139,764.06 × 63,570.84
  4. Step 4: Simplify right side
    101,275.80x = 8,884,918,696.01
  5. Step 5: Solve for x
    x = 8,884,918,696.01/101,275.80
  6. Step 6: Final answer
    x = 87,729.93

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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.