Home / 109,999.30-164,998.95-79,125.70

Finding the Fourth Proportional to 109,999.30, 164,998.95 and 79,125.70

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Solution

The fourth proportional to 109,999.30, 164,998.95 and 79,125.70 is: 118,688.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,999.30 : 164,998.95 = 79,125.70 : x
  2. Step 2: Convert to fraction form
    109,999.30/164,998.95 = 79,125.70/x
  3. Step 3: Cross multiply
    109,999.30x = 164,998.95 × 79,125.70
  4. Step 4: Simplify right side
    109,999.30x = 13,055,657,418.02
  5. Step 5: Solve for x
    x = 13,055,657,418.02/109,999.30
  6. Step 6: Final answer
    x = 118,688.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.