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Finding the Fourth Proportional to 115,430.80, 173,146.20 and 65,664.40

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Solution

The fourth proportional to 115,430.80, 173,146.20 and 65,664.40 is: 98,496.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,430.80 : 173,146.20 = 65,664.40 : x
  2. Step 2: Convert to fraction form
    115,430.80/173,146.20 = 65,664.40/x
  3. Step 3: Cross multiply
    115,430.80x = 173,146.20 × 65,664.40
  4. Step 4: Simplify right side
    115,430.80x = 11,369,541,335.28
  5. Step 5: Solve for x
    x = 11,369,541,335.28/115,430.80
  6. Step 6: Final answer
    x = 98,496.60

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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.