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Finding the Fourth Proportional to 103,857.73, 143,326.47 and 63,570.76

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Solution

The fourth proportional to 103,857.73, 143,326.47 and 63,570.76 is: 87,729.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,857.73 : 143,326.47 = 63,570.76 : x
  2. Step 2: Convert to fraction form
    103,857.73/143,326.47 = 63,570.76/x
  3. Step 3: Cross multiply
    103,857.73x = 143,326.47 × 63,570.76
  4. Step 4: Simplify right side
    103,857.73x = 9,111,372,626.02
  5. Step 5: Solve for x
    x = 9,111,372,626.02/103,857.73
  6. Step 6: Final answer
    x = 87,729.36

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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.