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Finding the Fourth Proportional to 101,322.31, 139,825.02 and 55,999.30

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Solution

The fourth proportional to 101,322.31, 139,825.02 and 55,999.30 is: 77,279.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,322.31 : 139,825.02 = 55,999.30 : x
  2. Step 2: Convert to fraction form
    101,322.31/139,825.02 = 55,999.30/x
  3. Step 3: Cross multiply
    101,322.31x = 139,825.02 × 55,999.30
  4. Step 4: Simplify right side
    101,322.31x = 7,830,103,242.49
  5. Step 5: Solve for x
    x = 7,830,103,242.49/101,322.31
  6. Step 6: Final answer
    x = 77,279.16

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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.