Home / 206,928,020.20-310,280,055.90-85,771,719.40

Finding the Fourth Proportional to 206,928,020.20, 310,280,055.90 and 85,771,719.40

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Solution

The fourth proportional to 206,928,020.20, 310,280,055.90 and 85,771,719.40 is: 128,611,165.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,928,020.20 : 310,280,055.90 = 85,771,719.40 : x
  2. Step 2: Convert to fraction form
    206,928,020.20/310,280,055.90 = 85,771,719.40/x
  3. Step 3: Cross multiply
    206,928,020.20x = 310,280,055.90 × 85,771,719.40
  4. Step 4: Simplify right side
    206,928,020.20x = 26,613,253,890,071,116
  5. Step 5: Solve for x
    x = 26,613,253,890,071,116/206,928,020.20
  6. Step 6: Final answer
    x = 128,611,165.68

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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.