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Finding the Fourth Proportional to 163,539.72, 225,686.82 and 99,008.08

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Solution

The fourth proportional to 163,539.72, 225,686.82 and 99,008.08 is: 136,632.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,539.72 : 225,686.82 = 99,008.08 : x
  2. Step 2: Convert to fraction form
    163,539.72/225,686.82 = 99,008.08/x
  3. Step 3: Cross multiply
    163,539.72x = 225,686.82 × 99,008.08
  4. Step 4: Simplify right side
    163,539.72x = 22,344,818,729.51
  5. Step 5: Solve for x
    x = 22,344,818,729.51/163,539.72
  6. Step 6: Final answer
    x = 136,632.37

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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.