Home / 128,904.12-193,365.50-53,948.85

Finding the Fourth Proportional to 128,904.12, 193,365.50 and 53,948.85

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Solution

The fourth proportional to 128,904.12, 193,365.50 and 53,948.85 is: 80,927.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,904.12 : 193,365.50 = 53,948.85 : x
  2. Step 2: Convert to fraction form
    128,904.12/193,365.50 = 53,948.85/x
  3. Step 3: Cross multiply
    128,904.12x = 193,365.50 × 53,948.85
  4. Step 4: Simplify right side
    128,904.12x = 10,431,845,359.81
  5. Step 5: Solve for x
    x = 10,431,845,359.81/128,904.12
  6. Step 6: Final answer
    x = 80,927.17

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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.