Home / 112,166.20-168,395.10-90,004.60

Finding the Fourth Proportional to 112,166.20, 168,395.10 and 90,004.60

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Solution

The fourth proportional to 112,166.20, 168,395.10 and 90,004.60 is: 135,123.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,166.20 : 168,395.10 = 90,004.60 : x
  2. Step 2: Convert to fraction form
    112,166.20/168,395.10 = 90,004.60/x
  3. Step 3: Cross multiply
    112,166.20x = 168,395.10 × 90,004.60
  4. Step 4: Simplify right side
    112,166.20x = 15,156,333,617.46
  5. Step 5: Solve for x
    x = 15,156,333,617.46/112,166.20
  6. Step 6: Final answer
    x = 135,123.89

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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.