Home / 128,903.40-193,364.31-53,948.07

Finding the Fourth Proportional to 128,903.40, 193,364.31 and 53,948.07

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Solution

The fourth proportional to 128,903.40, 193,364.31 and 53,948.07 is: 80,925.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,903.40 : 193,364.31 = 53,948.07 : x
  2. Step 2: Convert to fraction form
    128,903.40/193,364.31 = 53,948.07/x
  3. Step 3: Cross multiply
    128,903.40x = 193,364.31 × 53,948.07
  4. Step 4: Simplify right side
    128,903.40x = 10,431,631,331.38
  5. Step 5: Solve for x
    x = 10,431,631,331.38/128,903.40
  6. Step 6: Final answer
    x = 80,925.96

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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.