Home / 108,756.15-150,014.37-78,585.78

Finding the Fourth Proportional to 108,756.15, 150,014.37 and 78,585.78

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Solution

The fourth proportional to 108,756.15, 150,014.37 and 78,585.78 is: 108,398.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,756.15 : 150,014.37 = 78,585.78 : x
  2. Step 2: Convert to fraction form
    108,756.15/150,014.37 = 78,585.78/x
  3. Step 3: Cross multiply
    108,756.15x = 150,014.37 × 78,585.78
  4. Step 4: Simplify right side
    108,756.15x = 11,788,996,277.66
  5. Step 5: Solve for x
    x = 11,788,996,277.66/108,756.15
  6. Step 6: Final answer
    x = 108,398.43

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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.