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Finding the Fourth Proportional to 145,901.75, 201,344.46 and 78,833.75

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Solution

The fourth proportional to 145,901.75, 201,344.46 and 78,833.75 is: 108,790.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,901.75 : 201,344.46 = 78,833.75 : x
  2. Step 2: Convert to fraction form
    145,901.75/201,344.46 = 78,833.75/x
  3. Step 3: Cross multiply
    145,901.75x = 201,344.46 × 78,833.75
  4. Step 4: Simplify right side
    145,901.75x = 15,872,738,823.53
  5. Step 5: Solve for x
    x = 15,872,738,823.53/145,901.75
  6. Step 6: Final answer
    x = 108,790.60

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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.