Home / 122,160.40-168,583.24-74,415.76

Finding the Fourth Proportional to 122,160.40, 168,583.24 and 74,415.76

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Solution

The fourth proportional to 122,160.40, 168,583.24 and 74,415.76 is: 102,694.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,160.40 : 168,583.24 = 74,415.76 : x
  2. Step 2: Convert to fraction form
    122,160.40/168,583.24 = 74,415.76/x
  3. Step 3: Cross multiply
    122,160.40x = 168,583.24 × 74,415.76
  4. Step 4: Simplify right side
    122,160.40x = 12,545,249,927.86
  5. Step 5: Solve for x
    x = 12,545,249,927.86/122,160.40
  6. Step 6: Final answer
    x = 102,694.90

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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.