Home / 128,322.96-192,109.08-74,851.44

Finding the Fourth Proportional to 128,322.96, 192,109.08 and 74,851.44

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Solution

The fourth proportional to 128,322.96, 192,109.08 and 74,851.44 is: 112,058.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,322.96 : 192,109.08 = 74,851.44 : x
  2. Step 2: Convert to fraction form
    128,322.96/192,109.08 = 74,851.44/x
  3. Step 3: Cross multiply
    128,322.96x = 192,109.08 × 74,851.44
  4. Step 4: Simplify right side
    128,322.96x = 14,379,641,275.08
  5. Step 5: Solve for x
    x = 14,379,641,275.08/128,322.96
  6. Step 6: Final answer
    x = 112,058.21

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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.