Home / 207,256.80-310,885.20-74,141.40

Finding the Fourth Proportional to 207,256.80, 310,885.20 and 74,141.40

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Solution

The fourth proportional to 207,256.80, 310,885.20 and 74,141.40 is: 111,212.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,256.80 : 310,885.20 = 74,141.40 : x
  2. Step 2: Convert to fraction form
    207,256.80/310,885.20 = 74,141.40/x
  3. Step 3: Cross multiply
    207,256.80x = 310,885.20 × 74,141.40
  4. Step 4: Simplify right side
    207,256.80x = 23,049,463,967.28
  5. Step 5: Solve for x
    x = 23,049,463,967.28/207,256.80
  6. Step 6: Final answer
    x = 111,212.10

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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.