Home / 117,243.28-161,851.52-78,547.73

Finding the Fourth Proportional to 117,243.28, 161,851.52 and 78,547.73

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Solution

The fourth proportional to 117,243.28, 161,851.52 and 78,547.73 is: 108,433.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,243.28 : 161,851.52 = 78,547.73 : x
  2. Step 2: Convert to fraction form
    117,243.28/161,851.52 = 78,547.73/x
  3. Step 3: Cross multiply
    117,243.28x = 161,851.52 × 78,547.73
  4. Step 4: Simplify right side
    117,243.28x = 12,713,069,504.94
  5. Step 5: Solve for x
    x = 12,713,069,504.94/117,243.28
  6. Step 6: Final answer
    x = 108,433.25

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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.