Home / 152,554,379.09-210,569,847.11-99,639,176.20

Finding the Fourth Proportional to 152,554,379.09, 210,569,847.11 and 99,639,176.20

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Solution

The fourth proportional to 152,554,379.09, 210,569,847.11 and 99,639,176.20 is: 137,531,326.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,554,379.09 : 210,569,847.11 = 99,639,176.20 : x
  2. Step 2: Convert to fraction form
    152,554,379.09/210,569,847.11 = 99,639,176.20/x
  3. Step 3: Cross multiply
    152,554,379.09x = 210,569,847.11 × 99,639,176.20
  4. Step 4: Simplify right side
    152,554,379.09x = 20,981,006,097,949,376
  5. Step 5: Solve for x
    x = 20,981,006,097,949,376/152,554,379.09
  6. Step 6: Final answer
    x = 137,531,326.36

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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.