Home / 137,256,465.16-205,821,913.02-81,949,405.96

Finding the Fourth Proportional to 137,256,465.16, 205,821,913.02 and 81,949,405.96

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Solution

The fourth proportional to 137,256,465.16, 205,821,913.02 and 81,949,405.96 is: 122,886,623.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,256,465.16 : 205,821,913.02 = 81,949,405.96 : x
  2. Step 2: Convert to fraction form
    137,256,465.16/205,821,913.02 = 81,949,405.96/x
  3. Step 3: Cross multiply
    137,256,465.16x = 205,821,913.02 × 81,949,405.96
  4. Step 4: Simplify right side
    137,256,465.16x = 16,866,983,505,539,790
  5. Step 5: Solve for x
    x = 16,866,983,505,539,790/137,256,465.16
  6. Step 6: Final answer
    x = 122,886,623.12

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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.