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Finding the Fourth Proportional to 103,398.90, 155,127.15 and 50,810.10

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Solution

The fourth proportional to 103,398.90, 155,127.15 and 50,810.10 is: 76,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,398.90 : 155,127.15 = 50,810.10 : x
  2. Step 2: Convert to fraction form
    103,398.90/155,127.15 = 50,810.10/x
  3. Step 3: Cross multiply
    103,398.90x = 155,127.15 × 50,810.10
  4. Step 4: Simplify right side
    103,398.90x = 7,882,026,004.22
  5. Step 5: Solve for x
    x = 7,882,026,004.22/103,398.90
  6. Step 6: Final answer
    x = 76,229.30

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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.