Home / 115,781.67-159,787.29-64,799.51

Finding the Fourth Proportional to 115,781.67, 159,787.29 and 64,799.51

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Solution

The fourth proportional to 115,781.67, 159,787.29 and 64,799.51 is: 89,428.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,781.67 : 159,787.29 = 64,799.51 : x
  2. Step 2: Convert to fraction form
    115,781.67/159,787.29 = 64,799.51/x
  3. Step 3: Cross multiply
    115,781.67x = 159,787.29 × 64,799.51
  4. Step 4: Simplify right side
    115,781.67x = 10,354,138,096.23
  5. Step 5: Solve for x
    x = 10,354,138,096.23/115,781.67
  6. Step 6: Final answer
    x = 89,428.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.