Home / 109,942.10-164,913.15-103,381.10

Finding the Fourth Proportional to 109,942.10, 164,913.15 and 103,381.10

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Solution

The fourth proportional to 109,942.10, 164,913.15 and 103,381.10 is: 155,071.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,942.10 : 164,913.15 = 103,381.10 : x
  2. Step 2: Convert to fraction form
    109,942.10/164,913.15 = 103,381.10/x
  3. Step 3: Cross multiply
    109,942.10x = 164,913.15 × 103,381.10
  4. Step 4: Simplify right side
    109,942.10x = 17,048,902,851.47
  5. Step 5: Solve for x
    x = 17,048,902,851.47/109,942.10
  6. Step 6: Final answer
    x = 155,071.65

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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.