Home / 117,637.78-162,359.49-85,911.70

Finding the Fourth Proportional to 117,637.78, 162,359.49 and 85,911.70

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Solution

The fourth proportional to 117,637.78, 162,359.49 and 85,911.70 is: 118,572.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,637.78 : 162,359.49 = 85,911.70 : x
  2. Step 2: Convert to fraction form
    117,637.78/162,359.49 = 85,911.70/x
  3. Step 3: Cross multiply
    117,637.78x = 162,359.49 × 85,911.70
  4. Step 4: Simplify right side
    117,637.78x = 13,948,579,797.03
  5. Step 5: Solve for x
    x = 13,948,579,797.03/117,637.78
  6. Step 6: Final answer
    x = 118,572.28

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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.