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Finding the Fourth Proportional to 157,081.70, 235,622.55 and 121,652.30

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Solution

The fourth proportional to 157,081.70, 235,622.55 and 121,652.30 is: 182,478.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,081.70 : 235,622.55 = 121,652.30 : x
  2. Step 2: Convert to fraction form
    157,081.70/235,622.55 = 121,652.30/x
  3. Step 3: Cross multiply
    157,081.70x = 235,622.55 × 121,652.30
  4. Step 4: Simplify right side
    157,081.70x = 28,664,025,139.37
  5. Step 5: Solve for x
    x = 28,664,025,139.37/157,081.70
  6. Step 6: Final answer
    x = 182,478.45

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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.