Home / 209,988.70-314,901.15-91,579.30

Finding the Fourth Proportional to 209,988.70, 314,901.15 and 91,579.30

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Solution

The fourth proportional to 209,988.70, 314,901.15 and 91,579.30 is: 137,333.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,988.70 : 314,901.15 = 91,579.30 : x
  2. Step 2: Convert to fraction form
    209,988.70/314,901.15 = 91,579.30/x
  3. Step 3: Cross multiply
    209,988.70x = 314,901.15 × 91,579.30
  4. Step 4: Simplify right side
    209,988.70x = 28,838,426,886.20
  5. Step 5: Solve for x
    x = 28,838,426,886.20/209,988.70
  6. Step 6: Final answer
    x = 137,333.23

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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.