Home / 109,818.24-164,862.02-72,409.60

Finding the Fourth Proportional to 109,818.24, 164,862.02 and 72,409.60

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Solution

The fourth proportional to 109,818.24, 164,862.02 and 72,409.60 is: 108,703.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,818.24 : 164,862.02 = 72,409.60 : x
  2. Step 2: Convert to fraction form
    109,818.24/164,862.02 = 72,409.60/x
  3. Step 3: Cross multiply
    109,818.24x = 164,862.02 × 72,409.60
  4. Step 4: Simplify right side
    109,818.24x = 11,937,592,923.39
  5. Step 5: Solve for x
    x = 11,937,592,923.39/109,818.24
  6. Step 6: Final answer
    x = 108,703.19

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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.