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Finding the Fourth Proportional to 121,410.84, 167,165.69 and 103,225.80

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Solution

The fourth proportional to 121,410.84, 167,165.69 and 103,225.80 is: 142,127.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,410.84 : 167,165.69 = 103,225.80 : x
  2. Step 2: Convert to fraction form
    121,410.84/167,165.69 = 103,225.80/x
  3. Step 3: Cross multiply
    121,410.84x = 167,165.69 × 103,225.80
  4. Step 4: Simplify right side
    121,410.84x = 17,255,812,082.80
  5. Step 5: Solve for x
    x = 17,255,812,082.80/121,410.84
  6. Step 6: Final answer
    x = 142,127.44

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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.