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Finding the Fourth Proportional to 150,420.69, 207,586.31 and 85,900.46

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Solution

The fourth proportional to 150,420.69, 207,586.31 and 85,900.46 is: 118,545.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,420.69 : 207,586.31 = 85,900.46 : x
  2. Step 2: Convert to fraction form
    150,420.69/207,586.31 = 85,900.46/x
  3. Step 3: Cross multiply
    150,420.69x = 207,586.31 × 85,900.46
  4. Step 4: Simplify right side
    150,420.69x = 17,831,758,051.27
  5. Step 5: Solve for x
    x = 17,831,758,051.27/150,420.69
  6. Step 6: Final answer
    x = 118,545.91

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1.5x scale

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.