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Finding the Fourth Proportional to 105,884.65, 146,128.49 and 70,012.45

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Solution

The fourth proportional to 105,884.65, 146,128.49 and 70,012.45 is: 96,622.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,884.65 : 146,128.49 = 70,012.45 : x
  2. Step 2: Convert to fraction form
    105,884.65/146,128.49 = 70,012.45/x
  3. Step 3: Cross multiply
    105,884.65x = 146,128.49 × 70,012.45
  4. Step 4: Simplify right side
    105,884.65x = 10,230,813,599.70
  5. Step 5: Solve for x
    x = 10,230,813,599.70/105,884.65
  6. Step 6: Final answer
    x = 96,622.25

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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.