Home / 108,385.75-149,521.81-70,157.60

Finding the Fourth Proportional to 108,385.75, 149,521.81 and 70,157.60

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Solution

The fourth proportional to 108,385.75, 149,521.81 and 70,157.60 is: 96,784.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,385.75 : 149,521.81 = 70,157.60 : x
  2. Step 2: Convert to fraction form
    108,385.75/149,521.81 = 70,157.60/x
  3. Step 3: Cross multiply
    108,385.75x = 149,521.81 × 70,157.60
  4. Step 4: Simplify right side
    108,385.75x = 10,490,091,337.26
  5. Step 5: Solve for x
    x = 10,490,091,337.26/108,385.75
  6. Step 6: Final answer
    x = 96,784.78

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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.