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Finding the Fourth Proportional to 101,161.47, 139,602.84 and 55,839.47

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Solution

The fourth proportional to 101,161.47, 139,602.84 and 55,839.47 is: 77,058.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,161.47 : 139,602.84 = 55,839.47 : x
  2. Step 2: Convert to fraction form
    101,161.47/139,602.84 = 55,839.47/x
  3. Step 3: Cross multiply
    101,161.47x = 139,602.84 × 55,839.47
  4. Step 4: Simplify right side
    101,161.47x = 7,795,348,596.09
  5. Step 5: Solve for x
    x = 7,795,348,596.09/101,161.47
  6. Step 6: Final answer
    x = 77,058.47

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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.