Home / 109,365.10-164,047.65-91,869.10

Finding the Fourth Proportional to 109,365.10, 164,047.65 and 91,869.10

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Solution

The fourth proportional to 109,365.10, 164,047.65 and 91,869.10 is: 137,803.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,365.10 : 164,047.65 = 91,869.10 : x
  2. Step 2: Convert to fraction form
    109,365.10/164,047.65 = 91,869.10/x
  3. Step 3: Cross multiply
    109,365.10x = 164,047.65 × 91,869.10
  4. Step 4: Simplify right side
    109,365.10x = 15,070,909,962.62
  5. Step 5: Solve for x
    x = 15,070,909,962.62/109,365.10
  6. Step 6: Final answer
    x = 137,803.65

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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.