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Finding the Fourth Proportional to 180,038.43, 248,458.05 and 99,471.15

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Solution

The fourth proportional to 180,038.43, 248,458.05 and 99,471.15 is: 137,272.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,038.43 : 248,458.05 = 99,471.15 : x
  2. Step 2: Convert to fraction form
    180,038.43/248,458.05 = 99,471.15/x
  3. Step 3: Cross multiply
    180,038.43x = 248,458.05 × 99,471.15
  4. Step 4: Simplify right side
    180,038.43x = 24,714,407,960.26
  5. Step 5: Solve for x
    x = 24,714,407,960.26/180,038.43
  6. Step 6: Final answer
    x = 137,272.96

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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.