Home / 142,545.96-196,709.22-78,013.38

Finding the Fourth Proportional to 142,545.96, 196,709.22 and 78,013.38

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Solution

The fourth proportional to 142,545.96, 196,709.22 and 78,013.38 is: 107,656.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,545.96 : 196,709.22 = 78,013.38 : x
  2. Step 2: Convert to fraction form
    142,545.96/196,709.22 = 78,013.38/x
  3. Step 3: Cross multiply
    142,545.96x = 196,709.22 × 78,013.38
  4. Step 4: Simplify right side
    142,545.96x = 15,345,951,129.36
  5. Step 5: Solve for x
    x = 15,345,951,129.36/142,545.96
  6. Step 6: Final answer
    x = 107,656.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.