Home / 135,444.48-186,913.92-78,894.72

Finding the Fourth Proportional to 135,444.48, 186,913.92 and 78,894.72

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Solution

The fourth proportional to 135,444.48, 186,913.92 and 78,894.72 is: 108,875.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,444.48 : 186,913.92 = 78,894.72 : x
  2. Step 2: Convert to fraction form
    135,444.48/186,913.92 = 78,894.72/x
  3. Step 3: Cross multiply
    135,444.48x = 186,913.92 × 78,894.72
  4. Step 4: Simplify right side
    135,444.48x = 14,746,521,382.50
  5. Step 5: Solve for x
    x = 14,746,521,382.50/135,444.48
  6. Step 6: Final answer
    x = 108,875.03

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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.