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Finding the Fourth Proportional to 111,918.99, 154,401.08 and 74,127.63

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Solution

The fourth proportional to 111,918.99, 154,401.08 and 74,127.63 is: 102,264.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,918.99 : 154,401.08 = 74,127.63 : x
  2. Step 2: Convert to fraction form
    111,918.99/154,401.08 = 74,127.63/x
  3. Step 3: Cross multiply
    111,918.99x = 154,401.08 × 74,127.63
  4. Step 4: Simplify right side
    111,918.99x = 11,445,385,759.20
  5. Step 5: Solve for x
    x = 11,445,385,759.20/111,918.99
  6. Step 6: Final answer
    x = 102,264.91

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1.5x scale

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.