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Finding the Fourth Proportional to 145,243.01, 217,815.10 and 55,264.36

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Solution

The fourth proportional to 145,243.01, 217,815.10 and 55,264.36 is: 82,877.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,243.01 : 217,815.10 = 55,264.36 : x
  2. Step 2: Convert to fraction form
    145,243.01/217,815.10 = 55,264.36/x
  3. Step 3: Cross multiply
    145,243.01x = 217,815.10 × 55,264.36
  4. Step 4: Simplify right side
    145,243.01x = 12,037,411,417.14
  5. Step 5: Solve for x
    x = 12,037,411,417.14/145,243.01
  6. Step 6: Final answer
    x = 82,877.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.