Home / 85,968,662.30-128,952,993.45-74,771,222.30

Finding the Fourth Proportional to 85,968,662.30, 128,952,993.45 and 74,771,222.30

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Solution

The fourth proportional to 85,968,662.30, 128,952,993.45 and 74,771,222.30 is: 112,156,833.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,662.30 : 128,952,993.45 = 74,771,222.30 : x
  2. Step 2: Convert to fraction form
    85,968,662.30/128,952,993.45 = 74,771,222.30/x
  3. Step 3: Cross multiply
    85,968,662.30x = 128,952,993.45 × 74,771,222.30
  4. Step 4: Simplify right side
    85,968,662.30x = 9,641,972,939,500,394
  5. Step 5: Solve for x
    x = 9,641,972,939,500,394/85,968,662.30
  6. Step 6: Final answer
    x = 112,156,833.45

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1.5x scale

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.