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Finding the Fourth Proportional to 163,401.76, 225,510.96 and 99,776.80

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Solution

The fourth proportional to 163,401.76, 225,510.96 and 99,776.80 is: 137,702.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,401.76 : 225,510.96 = 99,776.80 : x
  2. Step 2: Convert to fraction form
    163,401.76/225,510.96 = 99,776.80/x
  3. Step 3: Cross multiply
    163,401.76x = 225,510.96 × 99,776.80
  4. Step 4: Simplify right side
    163,401.76x = 22,500,761,953.73
  5. Step 5: Solve for x
    x = 22,500,761,953.73/163,401.76
  6. Step 6: Final answer
    x = 137,702.08

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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.