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Finding the Fourth Proportional to 121,909.00, 168,268.24 and 70,931.58

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Solution

The fourth proportional to 121,909.00, 168,268.24 and 70,931.58 is: 97,905.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,909.00 : 168,268.24 = 70,931.58 : x
  2. Step 2: Convert to fraction form
    121,909.00/168,268.24 = 70,931.58/x
  3. Step 3: Cross multiply
    121,909.00x = 168,268.24 × 70,931.58
  4. Step 4: Simplify right side
    121,909.00x = 11,935,532,725.02
  5. Step 5: Solve for x
    x = 11,935,532,725.02/121,909.00
  6. Step 6: Final answer
    x = 97,905.26

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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.