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Finding the Fourth Proportional to 143,590.77, 215,386.19 and 64,612.73

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Solution

The fourth proportional to 143,590.77, 215,386.19 and 64,612.73 is: 96,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,590.77 : 215,386.19 = 64,612.73 : x
  2. Step 2: Convert to fraction form
    143,590.77/215,386.19 = 64,612.73/x
  3. Step 3: Cross multiply
    143,590.77x = 215,386.19 × 64,612.73
  4. Step 4: Simplify right side
    143,590.77x = 13,916,688,340.20
  5. Step 5: Solve for x
    x = 13,916,688,340.20/143,590.77
  6. Step 6: Final answer
    x = 96,919.10

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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.