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Finding the Fourth Proportional to 126,621, 174,742.47 and 70,032.42

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Solution

The fourth proportional to 126,621, 174,742.47 and 70,032.42 is: 96,647.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,621 : 174,742.47 = 70,032.42 : x
  2. Step 2: Convert to fraction form
    126,621/174,742.47 = 70,032.42/x
  3. Step 3: Cross multiply
    126,621x = 174,742.47 × 70,032.42
  4. Step 4: Simplify right side
    126,621x = 12,237,638,050.88
  5. Step 5: Solve for x
    x = 12,237,638,050.88/126,621
  6. Step 6: Final answer
    x = 96,647.78

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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.