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Finding the Fourth Proportional to 144,515.10, 216,768.60 and 65,629.20

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Solution

The fourth proportional to 144,515.10, 216,768.60 and 65,629.20 is: 98,441.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,515.10 : 216,768.60 = 65,629.20 : x
  2. Step 2: Convert to fraction form
    144,515.10/216,768.60 = 65,629.20/x
  3. Step 3: Cross multiply
    144,515.10x = 216,768.60 × 65,629.20
  4. Step 4: Simplify right side
    144,515.10x = 14,226,349,803.12
  5. Step 5: Solve for x
    x = 14,226,349,803.12/144,515.10
  6. Step 6: Final answer
    x = 98,441.96

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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.