Home / 128,302.04-192,627.60-72,181.64

Finding the Fourth Proportional to 128,302.04, 192,627.60 and 72,181.64

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Solution

The fourth proportional to 128,302.04, 192,627.60 and 72,181.64 is: 108,370.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,302.04 : 192,627.60 = 72,181.64 : x
  2. Step 2: Convert to fraction form
    128,302.04/192,627.60 = 72,181.64/x
  3. Step 3: Cross multiply
    128,302.04x = 192,627.60 × 72,181.64
  4. Step 4: Simplify right side
    128,302.04x = 13,904,176,077.26
  5. Step 5: Solve for x
    x = 13,904,176,077.26/128,302.04
  6. Step 6: Final answer
    x = 108,370.65

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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.