Home / 128,909.30-193,341.63-35,393.18

Finding the Fourth Proportional to 128,909.30, 193,341.63 and 35,393.18

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Solution

The fourth proportional to 128,909.30, 193,341.63 and 35,393.18 is: 53,083.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,909.30 : 193,341.63 = 35,393.18 : x
  2. Step 2: Convert to fraction form
    128,909.30/193,341.63 = 35,393.18/x
  3. Step 3: Cross multiply
    128,909.30x = 193,341.63 × 35,393.18
  4. Step 4: Simplify right side
    128,909.30x = 6,842,975,112.08
  5. Step 5: Solve for x
    x = 6,842,975,112.08/128,909.30
  6. Step 6: Final answer
    x = 53,083.64

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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.