Home / 100,901.02-139,244.36-55,579.20

Finding the Fourth Proportional to 100,901.02, 139,244.36 and 55,579.20

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Solution

The fourth proportional to 100,901.02, 139,244.36 and 55,579.20 is: 76,699.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,901.02 : 139,244.36 = 55,579.20 : x
  2. Step 2: Convert to fraction form
    100,901.02/139,244.36 = 55,579.20/x
  3. Step 3: Cross multiply
    100,901.02x = 139,244.36 × 55,579.20
  4. Step 4: Simplify right side
    100,901.02x = 7,739,090,133.31
  5. Step 5: Solve for x
    x = 7,739,090,133.31/100,901.02
  6. Step 6: Final answer
    x = 76,699.82

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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.