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Finding the Fourth Proportional to 121,614.55, 167,815.34 and 70,617.34

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Solution

The fourth proportional to 121,614.55, 167,815.34 and 70,617.34 is: 97,444.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,614.55 : 167,815.34 = 70,617.34 : x
  2. Step 2: Convert to fraction form
    121,614.55/167,815.34 = 70,617.34/x
  3. Step 3: Cross multiply
    121,614.55x = 167,815.34 × 70,617.34
  4. Step 4: Simplify right side
    121,614.55x = 11,850,671,729.83
  5. Step 5: Solve for x
    x = 11,850,671,729.83/121,614.55
  6. Step 6: Final answer
    x = 97,444.53

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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.