Home / 109,417.10-164,125.65-91,921.10

Finding the Fourth Proportional to 109,417.10, 164,125.65 and 91,921.10

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Solution

The fourth proportional to 109,417.10, 164,125.65 and 91,921.10 is: 137,881.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,417.10 : 164,125.65 = 91,921.10 : x
  2. Step 2: Convert to fraction form
    109,417.10/164,125.65 = 91,921.10/x
  3. Step 3: Cross multiply
    109,417.10x = 164,125.65 × 91,921.10
  4. Step 4: Simplify right side
    109,417.10x = 15,086,610,286.22
  5. Step 5: Solve for x
    x = 15,086,610,286.22/109,417.10
  6. Step 6: Final answer
    x = 137,881.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.