Home / 74,142.92-102,317.28-40,151.68

Finding the Fourth Proportional to 74,142.92, 102,317.28 and 40,151.68

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Solution

The fourth proportional to 74,142.92, 102,317.28 and 40,151.68 is: 55,409.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,142.92 : 102,317.28 = 40,151.68 : x
  2. Step 2: Convert to fraction form
    74,142.92/102,317.28 = 40,151.68/x
  3. Step 3: Cross multiply
    74,142.92x = 102,317.28 × 40,151.68
  4. Step 4: Simplify right side
    74,142.92x = 4,108,210,685.03
  5. Step 5: Solve for x
    x = 4,108,210,685.03/74,142.92
  6. Step 6: Final answer
    x = 55,409.35

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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.