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Finding the Fourth Proportional to 101,173.80, 139,619.08 and 55,851.80

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Solution

The fourth proportional to 101,173.80, 139,619.08 and 55,851.80 is: 77,075.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,173.80 : 139,619.08 = 55,851.80 : x
  2. Step 2: Convert to fraction form
    101,173.80/139,619.08 = 55,851.80/x
  3. Step 3: Cross multiply
    101,173.80x = 139,619.08 × 55,851.80
  4. Step 4: Simplify right side
    101,173.80x = 7,797,976,932.34
  5. Step 5: Solve for x
    x = 7,797,976,932.34/101,173.80
  6. Step 6: Final answer
    x = 77,075.06

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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.