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Finding the Fourth Proportional to 103,689.10, 155,360.85 and 97,468.30

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Solution

The fourth proportional to 103,689.10, 155,360.85 and 97,468.30 is: 146,040.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689.10 : 155,360.85 = 97,468.30 : x
  2. Step 2: Convert to fraction form
    103,689.10/155,360.85 = 97,468.30/x
  3. Step 3: Cross multiply
    103,689.10x = 155,360.85 × 97,468.30
  4. Step 4: Simplify right side
    103,689.10x = 15,142,757,936.06
  5. Step 5: Solve for x
    x = 15,142,757,936.06/103,689.10
  6. Step 6: Final answer
    x = 146,040.02

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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.