Home / 207,931.90-312,043.65-133,233.70

Finding the Fourth Proportional to 207,931.90, 312,043.65 and 133,233.70

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Solution

The fourth proportional to 207,931.90, 312,043.65 and 133,233.70 is: 199,943.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,931.90 : 312,043.65 = 133,233.70 : x
  2. Step 2: Convert to fraction form
    207,931.90/312,043.65 = 133,233.70/x
  3. Step 3: Cross multiply
    207,931.90x = 312,043.65 × 133,233.70
  4. Step 4: Simplify right side
    207,931.90x = 41,574,730,051.01
  5. Step 5: Solve for x
    x = 41,574,730,051.01/207,931.90
  6. Step 6: Final answer
    x = 199,943.97

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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.