Home / 145,512.90-200,809.47-81,850.14

Finding the Fourth Proportional to 145,512.90, 200,809.47 and 81,850.14

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Solution

The fourth proportional to 145,512.90, 200,809.47 and 81,850.14 is: 112,954.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,512.90 : 200,809.47 = 81,850.14 : x
  2. Step 2: Convert to fraction form
    145,512.90/200,809.47 = 81,850.14/x
  3. Step 3: Cross multiply
    145,512.90x = 200,809.47 × 81,850.14
  4. Step 4: Simplify right side
    145,512.90x = 16,436,283,232.83
  5. Step 5: Solve for x
    x = 16,436,283,232.83/145,512.90
  6. Step 6: Final answer
    x = 112,954.13

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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.