Home / 128,148.08-192,185.80-53,175.49

Finding the Fourth Proportional to 128,148.08, 192,185.80 and 53,175.49

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Solution

The fourth proportional to 128,148.08, 192,185.80 and 53,175.49 is: 79,748.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,148.08 : 192,185.80 = 53,175.49 : x
  2. Step 2: Convert to fraction form
    128,148.08/192,185.80 = 53,175.49/x
  3. Step 3: Cross multiply
    128,148.08x = 192,185.80 × 53,175.49
  4. Step 4: Simplify right side
    128,148.08x = 10,219,573,472.64
  5. Step 5: Solve for x
    x = 10,219,573,472.64/128,148.08
  6. Step 6: Final answer
    x = 79,748.16

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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.