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Finding the Fourth Proportional to 162,428.48, 243,715.44 and 103,248.80

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Solution

The fourth proportional to 162,428.48, 243,715.44 and 103,248.80 is: 154,919.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,428.48 : 243,715.44 = 103,248.80 : x
  2. Step 2: Convert to fraction form
    162,428.48/243,715.44 = 103,248.80/x
  3. Step 3: Cross multiply
    162,428.48x = 243,715.44 × 103,248.80
  4. Step 4: Simplify right side
    162,428.48x = 25,163,326,721.47
  5. Step 5: Solve for x
    x = 25,163,326,721.47/162,428.48
  6. Step 6: Final answer
    x = 154,919.42

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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.