Home / 143,964.10-215,946.15-86,883.40

Finding the Fourth Proportional to 143,964.10, 215,946.15 and 86,883.40

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Solution

The fourth proportional to 143,964.10, 215,946.15 and 86,883.40 is: 130,325.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,964.10 : 215,946.15 = 86,883.40 : x
  2. Step 2: Convert to fraction form
    143,964.10/215,946.15 = 86,883.40/x
  3. Step 3: Cross multiply
    143,964.10x = 215,946.15 × 86,883.40
  4. Step 4: Simplify right side
    143,964.10x = 18,762,135,728.91
  5. Step 5: Solve for x
    x = 18,762,135,728.91/143,964.10
  6. Step 6: Final answer
    x = 130,325.10

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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.