Home / 74,150.65-102,328.20-40,159.54

Finding the Fourth Proportional to 74,150.65, 102,328.20 and 40,159.54

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Solution

The fourth proportional to 74,150.65, 102,328.20 and 40,159.54 is: 55,420.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,150.65 : 102,328.20 = 40,159.54 : x
  2. Step 2: Convert to fraction form
    74,150.65/102,328.20 = 40,159.54/x
  3. Step 3: Cross multiply
    74,150.65x = 102,328.20 × 40,159.54
  4. Step 4: Simplify right side
    74,150.65x = 4,109,453,185.21
  5. Step 5: Solve for x
    x = 4,109,453,185.21/74,150.65
  6. Step 6: Final answer
    x = 55,420.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.