Home / 113,139.20-169,708.80-73,222.40

Finding the Fourth Proportional to 113,139.20, 169,708.80 and 73,222.40

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Solution

The fourth proportional to 113,139.20, 169,708.80 and 73,222.40 is: 109,833.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,139.20 : 169,708.80 = 73,222.40 : x
  2. Step 2: Convert to fraction form
    113,139.20/169,708.80 = 73,222.40/x
  3. Step 3: Cross multiply
    113,139.20x = 169,708.80 × 73,222.40
  4. Step 4: Simplify right side
    113,139.20x = 12,426,485,637.12
  5. Step 5: Solve for x
    x = 12,426,485,637.12/113,139.20
  6. Step 6: Final answer
    x = 109,833.60

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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.