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Finding the Fourth Proportional to 106,437.70, 146,829.05 and 66,136.15

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Solution

The fourth proportional to 106,437.70, 146,829.05 and 66,136.15 is: 91,233.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,437.70 : 146,829.05 = 66,136.15 : x
  2. Step 2: Convert to fraction form
    106,437.70/146,829.05 = 66,136.15/x
  3. Step 3: Cross multiply
    106,437.70x = 146,829.05 × 66,136.15
  4. Step 4: Simplify right side
    106,437.70x = 9,710,707,341.01
  5. Step 5: Solve for x
    x = 9,710,707,341.01/106,437.70
  6. Step 6: Final answer
    x = 91,233.72

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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.