Home / 108,700.36-149,937.40-78,530.04

Finding the Fourth Proportional to 108,700.36, 149,937.40 and 78,530.04

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Solution

The fourth proportional to 108,700.36, 149,937.40 and 78,530.04 is: 108,321.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,700.36 : 149,937.40 = 78,530.04 : x
  2. Step 2: Convert to fraction form
    108,700.36/149,937.40 = 78,530.04/x
  3. Step 3: Cross multiply
    108,700.36x = 149,937.40 × 78,530.04
  4. Step 4: Simplify right side
    108,700.36x = 11,774,590,019.50
  5. Step 5: Solve for x
    x = 11,774,590,019.50/108,700.36
  6. Step 6: Final answer
    x = 108,321.54

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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.