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Finding the Fourth Proportional to 163,235.82, 225,288.15 and 90,655.02

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Solution

The fourth proportional to 163,235.82, 225,288.15 and 90,655.02 is: 125,116.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,235.82 : 225,288.15 = 90,655.02 : x
  2. Step 2: Convert to fraction form
    163,235.82/225,288.15 = 90,655.02/x
  3. Step 3: Cross multiply
    163,235.82x = 225,288.15 × 90,655.02
  4. Step 4: Simplify right side
    163,235.82x = 20,423,501,744.01
  5. Step 5: Solve for x
    x = 20,423,501,744.01/163,235.82
  6. Step 6: Final answer
    x = 125,116.54

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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.