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Finding the Fourth Proportional to 163,428.48, 225,578.16 and 98,897.76

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Solution

The fourth proportional to 163,428.48, 225,578.16 and 98,897.76 is: 136,507.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,428.48 : 225,578.16 = 98,897.76 : x
  2. Step 2: Convert to fraction form
    163,428.48/225,578.16 = 98,897.76/x
  3. Step 3: Cross multiply
    163,428.48x = 225,578.16 × 98,897.76
  4. Step 4: Simplify right side
    163,428.48x = 22,309,174,728.92
  5. Step 5: Solve for x
    x = 22,309,174,728.92/163,428.48
  6. Step 6: Final answer
    x = 136,507.26

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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.