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Finding the Fourth Proportional to 183,405.70, 275,108.55 and 103,689.55

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Solution

The fourth proportional to 183,405.70, 275,108.55 and 103,689.55 is: 155,534.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,405.70 : 275,108.55 = 103,689.55 : x
  2. Step 2: Convert to fraction form
    183,405.70/275,108.55 = 103,689.55/x
  3. Step 3: Cross multiply
    183,405.70x = 275,108.55 × 103,689.55
  4. Step 4: Simplify right side
    183,405.70x = 28,525,881,750.65
  5. Step 5: Solve for x
    x = 28,525,881,750.65/183,405.70
  6. Step 6: Final answer
    x = 155,534.33

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1.5x scale

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.