Home / 207,977.78-287,002.74-117,332.55

Finding the Fourth Proportional to 207,977.78, 287,002.74 and 117,332.55

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Solution

The fourth proportional to 207,977.78, 287,002.74 and 117,332.55 is: 161,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,977.78 : 287,002.74 = 117,332.55 : x
  2. Step 2: Convert to fraction form
    207,977.78/287,002.74 = 117,332.55/x
  3. Step 3: Cross multiply
    207,977.78x = 287,002.74 × 117,332.55
  4. Step 4: Simplify right side
    207,977.78x = 33,674,763,781.18
  5. Step 5: Solve for x
    x = 33,674,763,781.18/207,977.78
  6. Step 6: Final answer
    x = 161,915.20

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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.