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Finding the Fourth Proportional to 109,225.08, 150,728.11 and 61,478.01

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Solution

The fourth proportional to 109,225.08, 150,728.11 and 61,478.01 is: 84,838.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,225.08 : 150,728.11 = 61,478.01 : x
  2. Step 2: Convert to fraction form
    109,225.08/150,728.11 = 61,478.01/x
  3. Step 3: Cross multiply
    109,225.08x = 150,728.11 × 61,478.01
  4. Step 4: Simplify right side
    109,225.08x = 9,266,464,100.17
  5. Step 5: Solve for x
    x = 9,266,464,100.17/109,225.08
  6. Step 6: Final answer
    x = 84,838.25

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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.