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Finding the Fourth Proportional to 163,826.80, 245,545.80 and 84,900.40

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Solution

The fourth proportional to 163,826.80, 245,545.80 and 84,900.40 is: 127,249.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,826.80 : 245,545.80 = 84,900.40 : x
  2. Step 2: Convert to fraction form
    163,826.80/245,545.80 = 84,900.40/x
  3. Step 3: Cross multiply
    163,826.80x = 245,545.80 × 84,900.40
  4. Step 4: Simplify right side
    163,826.80x = 20,846,936,638.32
  5. Step 5: Solve for x
    x = 20,846,936,638.32/163,826.80
  6. Step 6: Final answer
    x = 127,249.86

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1.5x scale

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.