Home / 145,512.96-200,807.15-81,851.21

Finding the Fourth Proportional to 145,512.96, 200,807.15 and 81,851.21

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Solution

The fourth proportional to 145,512.96, 200,807.15 and 81,851.21 is: 112,954.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,512.96 : 200,807.15 = 81,851.21 : x
  2. Step 2: Convert to fraction form
    145,512.96/200,807.15 = 81,851.21/x
  3. Step 3: Cross multiply
    145,512.96x = 200,807.15 × 81,851.21
  4. Step 4: Simplify right side
    145,512.96x = 16,436,308,004.30
  5. Step 5: Solve for x
    x = 16,436,308,004.30/145,512.96
  6. Step 6: Final answer
    x = 112,954.26

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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.