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Finding the Fourth Proportional to 124,225, 171,429.78 and 70,520.20

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Solution

The fourth proportional to 124,225, 171,429.78 and 70,520.20 is: 97,317.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,225 : 171,429.78 = 70,520.20 : x
  2. Step 2: Convert to fraction form
    124,225/171,429.78 = 70,520.20/x
  3. Step 3: Cross multiply
    124,225x = 171,429.78 × 70,520.20
  4. Step 4: Simplify right side
    124,225x = 12,089,262,371.56
  5. Step 5: Solve for x
    x = 12,089,262,371.56/124,225
  6. Step 6: Final answer
    x = 97,317.47

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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.