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Finding the Fourth Proportional to 191,040.66, 286,597.98 and 72,702.90

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Solution

The fourth proportional to 191,040.66, 286,597.98 and 72,702.90 is: 109,068.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,040.66 : 286,597.98 = 72,702.90 : x
  2. Step 2: Convert to fraction form
    191,040.66/286,597.98 = 72,702.90/x
  3. Step 3: Cross multiply
    191,040.66x = 286,597.98 × 72,702.90
  4. Step 4: Simplify right side
    191,040.66x = 20,836,504,280.14
  5. Step 5: Solve for x
    x = 20,836,504,280.14/191,040.66
  6. Step 6: Final answer
    x = 109,068.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.