Home / 121,852.08-168,174.90-74,120.40

Finding the Fourth Proportional to 121,852.08, 168,174.90 and 74,120.40

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Solution

The fourth proportional to 121,852.08, 168,174.90 and 74,120.40 is: 102,297.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,852.08 : 168,174.90 = 74,120.40 : x
  2. Step 2: Convert to fraction form
    121,852.08/168,174.90 = 74,120.40/x
  3. Step 3: Cross multiply
    121,852.08x = 168,174.90 × 74,120.40
  4. Step 4: Simplify right side
    121,852.08x = 12,465,190,857.96
  5. Step 5: Solve for x
    x = 12,465,190,857.96/121,852.08
  6. Step 6: Final answer
    x = 102,297.73

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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.