Home / 143,427.10-215,111.85-68,547.10

Finding the Fourth Proportional to 143,427.10, 215,111.85 and 68,547.10

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Solution

The fourth proportional to 143,427.10, 215,111.85 and 68,547.10 is: 102,806.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,427.10 : 215,111.85 = 68,547.10 : x
  2. Step 2: Convert to fraction form
    143,427.10/215,111.85 = 68,547.10/x
  3. Step 3: Cross multiply
    143,427.10x = 215,111.85 × 68,547.10
  4. Step 4: Simplify right side
    143,427.10x = 14,745,293,493.14
  5. Step 5: Solve for x
    x = 14,745,293,493.14/143,427.10
  6. Step 6: Final answer
    x = 102,806.89

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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.