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Finding the Fourth Proportional to 102,388.04, 153,582.05 and 28,516.04

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Solution

The fourth proportional to 102,388.04, 153,582.05 and 28,516.04 is: 42,774.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,388.04 : 153,582.05 = 28,516.04 : x
  2. Step 2: Convert to fraction form
    102,388.04/153,582.05 = 28,516.04/x
  3. Step 3: Cross multiply
    102,388.04x = 153,582.05 × 28,516.04
  4. Step 4: Simplify right side
    102,388.04x = 4,379,550,970.59
  5. Step 5: Solve for x
    x = 4,379,550,970.59/102,388.04
  6. Step 6: Final answer
    x = 42,774.05

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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.