Home / 100,005.18-138,033.63-62,257.02

Finding the Fourth Proportional to 100,005.18, 138,033.63 and 62,257.02

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Solution

The fourth proportional to 100,005.18, 138,033.63 and 62,257.02 is: 85,931.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,005.18 : 138,033.63 = 62,257.02 : x
  2. Step 2: Convert to fraction form
    100,005.18/138,033.63 = 62,257.02/x
  3. Step 3: Cross multiply
    100,005.18x = 138,033.63 × 62,257.02
  4. Step 4: Simplify right side
    100,005.18x = 8,593,562,463.58
  5. Step 5: Solve for x
    x = 8,593,562,463.58/100,005.18
  6. Step 6: Final answer
    x = 85,931.17

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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.