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Finding the Fourth Proportional to 165,655.70, 248,483.55 and 121,040.90

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Solution

The fourth proportional to 165,655.70, 248,483.55 and 121,040.90 is: 181,561.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,655.70 : 248,483.55 = 121,040.90 : x
  2. Step 2: Convert to fraction form
    165,655.70/248,483.55 = 121,040.90/x
  3. Step 3: Cross multiply
    165,655.70x = 248,483.55 × 121,040.90
  4. Step 4: Simplify right side
    165,655.70x = 30,076,672,527.20
  5. Step 5: Solve for x
    x = 30,076,672,527.20/165,655.70
  6. Step 6: Final answer
    x = 181,561.35

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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.