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Finding the Fourth Proportional to 145,990.94, 201,432.98 and 88,628.78

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Solution

The fourth proportional to 145,990.94, 201,432.98 and 88,628.78 is: 122,286.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,990.94 : 201,432.98 = 88,628.78 : x
  2. Step 2: Convert to fraction form
    145,990.94/201,432.98 = 88,628.78/x
  3. Step 3: Cross multiply
    145,990.94x = 201,432.98 × 88,628.78
  4. Step 4: Simplify right side
    145,990.94x = 17,852,759,269.16
  5. Step 5: Solve for x
    x = 17,852,759,269.16/145,990.94
  6. Step 6: Final answer
    x = 122,286.76

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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.