Home / 137,149,007.48-205,781,157.72-85,376,935.64

Finding the Fourth Proportional to 137,149,007.48, 205,781,157.72 and 85,376,935.64

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Solution

The fourth proportional to 137,149,007.48, 205,781,157.72 and 85,376,935.64 is: 128,101,289.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,149,007.48 : 205,781,157.72 = 85,376,935.64 : x
  2. Step 2: Convert to fraction form
    137,149,007.48/205,781,157.72 = 85,376,935.64/x
  3. Step 3: Cross multiply
    137,149,007.48x = 205,781,157.72 × 85,376,935.64
  4. Step 4: Simplify right side
    137,149,007.48x = 17,568,964,658,585,130
  5. Step 5: Solve for x
    x = 17,568,964,658,585,130/137,149,007.48
  6. Step 6: Final answer
    x = 128,101,289.11

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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.