Home / 202,938.39-304,407.45-128,172.15

Finding the Fourth Proportional to 202,938.39, 304,407.45 and 128,172.15

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Solution

The fourth proportional to 202,938.39, 304,407.45 and 128,172.15 is: 192,258.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,938.39 : 304,407.45 = 128,172.15 : x
  2. Step 2: Convert to fraction form
    202,938.39/304,407.45 = 128,172.15/x
  3. Step 3: Cross multiply
    202,938.39x = 304,407.45 × 128,172.15
  4. Step 4: Simplify right side
    202,938.39x = 39,016,557,342.52
  5. Step 5: Solve for x
    x = 39,016,557,342.52/202,938.39
  6. Step 6: Final answer
    x = 192,258.14

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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.