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Finding the Fourth Proportional to 101,792.30, 140,478.91 and 66,012.98

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Solution

The fourth proportional to 101,792.30, 140,478.91 and 66,012.98 is: 91,101.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,792.30 : 140,478.91 = 66,012.98 : x
  2. Step 2: Convert to fraction form
    101,792.30/140,478.91 = 66,012.98/x
  3. Step 3: Cross multiply
    101,792.30x = 140,478.91 × 66,012.98
  4. Step 4: Simplify right side
    101,792.30x = 9,273,430,608.82
  5. Step 5: Solve for x
    x = 9,273,430,608.82/101,792.30
  6. Step 6: Final answer
    x = 91,101.50

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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.