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Finding the Fourth Proportional to 103,598.85, 155,398.28 and 68,530.31

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Solution

The fourth proportional to 103,598.85, 155,398.28 and 68,530.31 is: 102,795.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,598.85 : 155,398.28 = 68,530.31 : x
  2. Step 2: Convert to fraction form
    103,598.85/155,398.28 = 68,530.31/x
  3. Step 3: Cross multiply
    103,598.85x = 155,398.28 × 68,530.31
  4. Step 4: Simplify right side
    103,598.85x = 10,649,492,150.45
  5. Step 5: Solve for x
    x = 10,649,492,150.45/103,598.85
  6. Step 6: Final answer
    x = 102,795.46

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.