Home / 145,352.48-200,578.74-81,686.12

Finding the Fourth Proportional to 145,352.48, 200,578.74 and 81,686.12

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Solution

The fourth proportional to 145,352.48, 200,578.74 and 81,686.12 is: 112,722.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,352.48 : 200,578.74 = 81,686.12 : x
  2. Step 2: Convert to fraction form
    145,352.48/200,578.74 = 81,686.12/x
  3. Step 3: Cross multiply
    145,352.48x = 200,578.74 × 81,686.12
  4. Step 4: Simplify right side
    145,352.48x = 16,384,499,025.09
  5. Step 5: Solve for x
    x = 16,384,499,025.09/145,352.48
  6. Step 6: Final answer
    x = 112,722.53

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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.