Home / 149,968.13-206,955.51-81,985.10

Finding the Fourth Proportional to 149,968.13, 206,955.51 and 81,985.10

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Solution

The fourth proportional to 149,968.13, 206,955.51 and 81,985.10 is: 113,139.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,968.13 : 206,955.51 = 81,985.10 : x
  2. Step 2: Convert to fraction form
    149,968.13/206,955.51 = 81,985.10/x
  3. Step 3: Cross multiply
    149,968.13x = 206,955.51 × 81,985.10
  4. Step 4: Simplify right side
    149,968.13x = 16,967,268,182.90
  5. Step 5: Solve for x
    x = 16,967,268,182.90/149,968.13
  6. Step 6: Final answer
    x = 113,139.16

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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.