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Finding the Fourth Proportional to 109,130.84, 150,599.68 and 61,388.63

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Solution

The fourth proportional to 109,130.84, 150,599.68 and 61,388.63 is: 84,715.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,130.84 : 150,599.68 = 61,388.63 : x
  2. Step 2: Convert to fraction form
    109,130.84/150,599.68 = 61,388.63/x
  3. Step 3: Cross multiply
    109,130.84x = 150,599.68 × 61,388.63
  4. Step 4: Simplify right side
    109,130.84x = 9,245,107,127.17
  5. Step 5: Solve for x
    x = 9,245,107,127.17/109,130.84
  6. Step 6: Final answer
    x = 84,715.81

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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.