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Finding the Fourth Proportional to 183,866.47, 275,909.85 and 78,685.54

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Solution

The fourth proportional to 183,866.47, 275,909.85 and 78,685.54 is: 118,075.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,866.47 : 275,909.85 = 78,685.54 : x
  2. Step 2: Convert to fraction form
    183,866.47/275,909.85 = 78,685.54/x
  3. Step 3: Cross multiply
    183,866.47x = 275,909.85 × 78,685.54
  4. Step 4: Simplify right side
    183,866.47x = 21,710,115,538.57
  5. Step 5: Solve for x
    x = 21,710,115,538.57/183,866.47
  6. Step 6: Final answer
    x = 118,075.45

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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.