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Finding the Fourth Proportional to 162,645.71, 244,051.95 and 78,477.65

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Solution

The fourth proportional to 162,645.71, 244,051.95 and 78,477.65 is: 117,756.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,645.71 : 244,051.95 = 78,477.65 : x
  2. Step 2: Convert to fraction form
    162,645.71/244,051.95 = 78,477.65/x
  3. Step 3: Cross multiply
    162,645.71x = 244,051.95 × 78,477.65
  4. Step 4: Simplify right side
    162,645.71x = 19,152,623,503.14
  5. Step 5: Solve for x
    x = 19,152,623,503.14/162,645.71
  6. Step 6: Final answer
    x = 117,756.71

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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.