Home / 133,114.75-183,702.12-72,689.20

Finding the Fourth Proportional to 133,114.75, 183,702.12 and 72,689.20

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Solution

The fourth proportional to 133,114.75, 183,702.12 and 72,689.20 is: 100,313.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,114.75 : 183,702.12 = 72,689.20 : x
  2. Step 2: Convert to fraction form
    133,114.75/183,702.12 = 72,689.20/x
  3. Step 3: Cross multiply
    133,114.75x = 183,702.12 × 72,689.20
  4. Step 4: Simplify right side
    133,114.75x = 13,353,160,141.10
  5. Step 5: Solve for x
    x = 13,353,160,141.10/133,114.75
  6. Step 6: Final answer
    x = 100,313.15

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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.