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Finding the Fourth Proportional to 161,803.95, 223,290.50 and 90,188.52

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Solution

The fourth proportional to 161,803.95, 223,290.50 and 90,188.52 is: 124,460.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,803.95 : 223,290.50 = 90,188.52 : x
  2. Step 2: Convert to fraction form
    161,803.95/223,290.50 = 90,188.52/x
  3. Step 3: Cross multiply
    161,803.95x = 223,290.50 × 90,188.52
  4. Step 4: Simplify right side
    161,803.95x = 20,138,239,274.12
  5. Step 5: Solve for x
    x = 20,138,239,274.12/161,803.95
  6. Step 6: Final answer
    x = 124,460.74

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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.