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Finding the Fourth Proportional to 105,007.81, 144,905.51 and 59,679.80

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Solution

The fourth proportional to 105,007.81, 144,905.51 and 59,679.80 is: 82,355.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,007.81 : 144,905.51 = 59,679.80 : x
  2. Step 2: Convert to fraction form
    105,007.81/144,905.51 = 59,679.80/x
  3. Step 3: Cross multiply
    105,007.81x = 144,905.51 × 59,679.80
  4. Step 4: Simplify right side
    105,007.81x = 8,647,931,855.70
  5. Step 5: Solve for x
    x = 8,647,931,855.70/105,007.81
  6. Step 6: Final answer
    x = 82,355.13

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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.