Home / 100,188.15-138,272.44-57,746.98

Finding the Fourth Proportional to 100,188.15, 138,272.44 and 57,746.98

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Solution

The fourth proportional to 100,188.15, 138,272.44 and 57,746.98 is: 79,698.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,188.15 : 138,272.44 = 57,746.98 : x
  2. Step 2: Convert to fraction form
    100,188.15/138,272.44 = 57,746.98/x
  3. Step 3: Cross multiply
    100,188.15x = 138,272.44 × 57,746.98
  4. Step 4: Simplify right side
    100,188.15x = 7,984,815,827.23
  5. Step 5: Solve for x
    x = 7,984,815,827.23/100,188.15
  6. Step 6: Final answer
    x = 79,698.21

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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.