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Finding the Fourth Proportional to 121,702.65, 182,622.71 and 65,541.57

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Solution

The fourth proportional to 121,702.65, 182,622.71 and 65,541.57 is: 98,349.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,702.65 : 182,622.71 = 65,541.57 : x
  2. Step 2: Convert to fraction form
    121,702.65/182,622.71 = 65,541.57/x
  3. Step 3: Cross multiply
    121,702.65x = 182,622.71 × 65,541.57
  4. Step 4: Simplify right side
    121,702.65x = 11,969,379,131.05
  5. Step 5: Solve for x
    x = 11,969,379,131.05/121,702.65
  6. Step 6: Final answer
    x = 98,349.37

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1.5x scale

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.