Home / 100,258.08-138,346.95-57,808.41

Finding the Fourth Proportional to 100,258.08, 138,346.95 and 57,808.41

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Solution

The fourth proportional to 100,258.08, 138,346.95 and 57,808.41 is: 79,770.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,258.08 : 138,346.95 = 57,808.41 : x
  2. Step 2: Convert to fraction form
    100,258.08/138,346.95 = 57,808.41/x
  3. Step 3: Cross multiply
    100,258.08x = 138,346.95 × 57,808.41
  4. Step 4: Simplify right side
    100,258.08x = 7,997,617,207.85
  5. Step 5: Solve for x
    x = 7,997,617,207.85/100,258.08
  6. Step 6: Final answer
    x = 79,770.30

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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.