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Finding the Fourth Proportional to 102,351.78, 153,498.51 and 64,855.26

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Solution

The fourth proportional to 102,351.78, 153,498.51 and 64,855.26 is: 97,264.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,351.78 : 153,498.51 = 64,855.26 : x
  2. Step 2: Convert to fraction form
    102,351.78/153,498.51 = 64,855.26/x
  3. Step 3: Cross multiply
    102,351.78x = 153,498.51 × 64,855.26
  4. Step 4: Simplify right side
    102,351.78x = 9,955,185,775.66
  5. Step 5: Solve for x
    x = 9,955,185,775.66/102,351.78
  6. Step 6: Final answer
    x = 97,264.41

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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.