Home / 206,861,296.40-310,267,061.40-85,680,112.40

Finding the Fourth Proportional to 206,861,296.40, 310,267,061.40 and 85,680,112.40

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Solution

The fourth proportional to 206,861,296.40, 310,267,061.40 and 85,680,112.40 is: 128,509,862.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,861,296.40 : 310,267,061.40 = 85,680,112.40 : x
  2. Step 2: Convert to fraction form
    206,861,296.40/310,267,061.40 = 85,680,112.40/x
  3. Step 3: Cross multiply
    206,861,296.40x = 310,267,061.40 × 85,680,112.40
  4. Step 4: Simplify right side
    206,861,296.40x = 26,583,716,694,769,700
  5. Step 5: Solve for x
    x = 26,583,716,694,769,700/206,861,296.40
  6. Step 6: Final answer
    x = 128,509,862.20

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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.