Home / 135,134.52-186,501.86-78,545.89

Finding the Fourth Proportional to 135,134.52, 186,501.86 and 78,545.89

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Solution

The fourth proportional to 135,134.52, 186,501.86 and 78,545.89 is: 108,402.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,134.52 : 186,501.86 = 78,545.89 : x
  2. Step 2: Convert to fraction form
    135,134.52/186,501.86 = 78,545.89/x
  3. Step 3: Cross multiply
    135,134.52x = 186,501.86 × 78,545.89
  4. Step 4: Simplify right side
    135,134.52x = 14,648,954,580.36
  5. Step 5: Solve for x
    x = 14,648,954,580.36/135,134.52
  6. Step 6: Final answer
    x = 108,402.76

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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.