Home / 101,213.02-139,671.16-55,890.15

Finding the Fourth Proportional to 101,213.02, 139,671.16 and 55,890.15

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Solution

The fourth proportional to 101,213.02, 139,671.16 and 55,890.15 is: 77,126.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,213.02 : 139,671.16 = 55,890.15 : x
  2. Step 2: Convert to fraction form
    101,213.02/139,671.16 = 55,890.15/x
  3. Step 3: Cross multiply
    101,213.02x = 139,671.16 × 55,890.15
  4. Step 4: Simplify right side
    101,213.02x = 7,806,242,083.07
  5. Step 5: Solve for x
    x = 7,806,242,083.07/101,213.02
  6. Step 6: Final answer
    x = 77,126.86

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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.