Home / 100,459.18-138,638.01-60,179.50

Finding the Fourth Proportional to 100,459.18, 138,638.01 and 60,179.50

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Solution

The fourth proportional to 100,459.18, 138,638.01 and 60,179.50 is: 83,050.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,459.18 : 138,638.01 = 60,179.50 : x
  2. Step 2: Convert to fraction form
    100,459.18/138,638.01 = 60,179.50/x
  3. Step 3: Cross multiply
    100,459.18x = 138,638.01 × 60,179.50
  4. Step 4: Simplify right side
    100,459.18x = 8,343,166,122.80
  5. Step 5: Solve for x
    x = 8,343,166,122.80/100,459.18
  6. Step 6: Final answer
    x = 83,050.31

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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.