Home / 102,869.65-154,303.30-78,062.05

Finding the Fourth Proportional to 102,869.65, 154,303.30 and 78,062.05

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Solution

The fourth proportional to 102,869.65, 154,303.30 and 78,062.05 is: 117,092.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,869.65 : 154,303.30 = 78,062.05 : x
  2. Step 2: Convert to fraction form
    102,869.65/154,303.30 = 78,062.05/x
  3. Step 3: Cross multiply
    102,869.65x = 154,303.30 × 78,062.05
  4. Step 4: Simplify right side
    102,869.65x = 12,045,231,919.77
  5. Step 5: Solve for x
    x = 12,045,231,919.77/102,869.65
  6. Step 6: Final answer
    x = 117,092.18

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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.