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Finding the Fourth Proportional to 159,707.92, 220,407 and 91,746.16

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Solution

The fourth proportional to 159,707.92, 220,407 and 91,746.16 is: 126,615.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,707.92 : 220,407 = 91,746.16 : x
  2. Step 2: Convert to fraction form
    159,707.92/220,407 = 91,746.16/x
  3. Step 3: Cross multiply
    159,707.92x = 220,407 × 91,746.16
  4. Step 4: Simplify right side
    159,707.92x = 20,221,495,887.12
  5. Step 5: Solve for x
    x = 20,221,495,887.12/159,707.92
  6. Step 6: Final answer
    x = 126,615.49

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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.