Home / 261,718,700.09-361,167,120.45-142,642,364.81

Finding the Fourth Proportional to 261,718,700.09, 361,167,120.45 and 142,642,364.81

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Solution

The fourth proportional to 261,718,700.09, 361,167,120.45 and 142,642,364.81 is: 196,843,909.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,718,700.09 : 361,167,120.45 = 142,642,364.81 : x
  2. Step 2: Convert to fraction form
    261,718,700.09/361,167,120.45 = 142,642,364.81/x
  3. Step 3: Cross multiply
    261,718,700.09x = 361,167,120.45 × 142,642,364.81
  4. Step 4: Simplify right side
    261,718,700.09x = 51,517,732,150,800,280
  5. Step 5: Solve for x
    x = 51,517,732,150,800,280/261,718,700.09
  6. Step 6: Final answer
    x = 196,843,909.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.