Home / 207,971.72-287,001.05-112,478.43

Finding the Fourth Proportional to 207,971.72, 287,001.05 and 112,478.43

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Solution

The fourth proportional to 207,971.72, 287,001.05 and 112,478.43 is: 155,220.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,971.72 : 287,001.05 = 112,478.43 : x
  2. Step 2: Convert to fraction form
    207,971.72/287,001.05 = 112,478.43/x
  3. Step 3: Cross multiply
    207,971.72x = 287,001.05 × 112,478.43
  4. Step 4: Simplify right side
    207,971.72x = 32,281,426,949.96
  5. Step 5: Solve for x
    x = 32,281,426,949.96/207,971.72
  6. Step 6: Final answer
    x = 155,220.28

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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.