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Finding the Fourth Proportional to 121,032.16, 167,021.46 and 65,840.08

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Solution

The fourth proportional to 121,032.16, 167,021.46 and 65,840.08 is: 90,857.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,032.16 : 167,021.46 = 65,840.08 : x
  2. Step 2: Convert to fraction form
    121,032.16/167,021.46 = 65,840.08/x
  3. Step 3: Cross multiply
    121,032.16x = 167,021.46 × 65,840.08
  4. Step 4: Simplify right side
    121,032.16x = 10,996,706,288.12
  5. Step 5: Solve for x
    x = 10,996,706,288.12/121,032.16
  6. Step 6: Final answer
    x = 90,857.72

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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.