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Finding the Fourth Proportional to 143,791.10, 215,710.42 and 64,903.58

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Solution

The fourth proportional to 143,791.10, 215,710.42 and 64,903.58 is: 97,366.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,791.10 : 215,710.42 = 64,903.58 : x
  2. Step 2: Convert to fraction form
    143,791.10/215,710.42 = 64,903.58/x
  3. Step 3: Cross multiply
    143,791.10x = 215,710.42 × 64,903.58
  4. Step 4: Simplify right side
    143,791.10x = 14,000,378,501.30
  5. Step 5: Solve for x
    x = 14,000,378,501.30/143,791.10
  6. Step 6: Final answer
    x = 97,366.10

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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.