Home / 206,148,278.76-309,369,948.36-74,990,300.70

Finding the Fourth Proportional to 206,148,278.76, 309,369,948.36 and 74,990,300.70

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Solution

The fourth proportional to 206,148,278.76, 309,369,948.36 and 74,990,300.70 is: 112,539,117.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,148,278.76 : 309,369,948.36 = 74,990,300.70 : x
  2. Step 2: Convert to fraction form
    206,148,278.76/309,369,948.36 = 74,990,300.70/x
  3. Step 3: Cross multiply
    206,148,278.76x = 309,369,948.36 × 74,990,300.70
  4. Step 4: Simplify right side
    206,148,278.76x = 23,199,745,455,059,872
  5. Step 5: Solve for x
    x = 23,199,745,455,059,872/206,148,278.76
  6. Step 6: Final answer
    x = 112,539,117.93

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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.