Home / 100,621.31-138,827.10-60,320.37

Finding the Fourth Proportional to 100,621.31, 138,827.10 and 60,320.37

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Solution

The fourth proportional to 100,621.31, 138,827.10 and 60,320.37 is: 83,223.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,621.31 : 138,827.10 = 60,320.37 : x
  2. Step 2: Convert to fraction form
    100,621.31/138,827.10 = 60,320.37/x
  3. Step 3: Cross multiply
    100,621.31x = 138,827.10 × 60,320.37
  4. Step 4: Simplify right side
    100,621.31x = 8,374,102,038.03
  5. Step 5: Solve for x
    x = 8,374,102,038.03/100,621.31
  6. Step 6: Final answer
    x = 83,223.94

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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.