Home / 85,293,122.60-127,939,683.90-69,987,621.80

Finding the Fourth Proportional to 85,293,122.60, 127,939,683.90 and 69,987,621.80

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Solution

The fourth proportional to 85,293,122.60, 127,939,683.90 and 69,987,621.80 is: 104,981,432.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,293,122.60 : 127,939,683.90 = 69,987,621.80 : x
  2. Step 2: Convert to fraction form
    85,293,122.60/127,939,683.90 = 69,987,621.80/x
  3. Step 3: Cross multiply
    85,293,122.60x = 127,939,683.90 × 69,987,621.80
  4. Step 4: Simplify right side
    85,293,122.60x = 8,954,194,210,004,749
  5. Step 5: Solve for x
    x = 8,954,194,210,004,749/85,293,122.60
  6. Step 6: Final answer
    x = 104,981,432.70

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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.