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Finding the Fourth Proportional to 154,807.49, 213,543.61 and 97,355.69

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Solution

The fourth proportional to 154,807.49, 213,543.61 and 97,355.69 is: 134,293.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,807.49 : 213,543.61 = 97,355.69 : x
  2. Step 2: Convert to fraction form
    154,807.49/213,543.61 = 97,355.69/x
  3. Step 3: Cross multiply
    154,807.49x = 213,543.61 × 97,355.69
  4. Step 4: Simplify right side
    154,807.49x = 20,789,683,942.14
  5. Step 5: Solve for x
    x = 20,789,683,942.14/154,807.49
  6. Step 6: Final answer
    x = 134,293.79

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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.