Home / 157,878.03-217,869.14-86,256.51

Finding the Fourth Proportional to 157,878.03, 217,869.14 and 86,256.51

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Solution

The fourth proportional to 157,878.03, 217,869.14 and 86,256.51 is: 119,032.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,878.03 : 217,869.14 = 86,256.51 : x
  2. Step 2: Convert to fraction form
    157,878.03/217,869.14 = 86,256.51/x
  3. Step 3: Cross multiply
    157,878.03x = 217,869.14 × 86,256.51
  4. Step 4: Simplify right side
    157,878.03x = 18,792,631,221.82
  5. Step 5: Solve for x
    x = 18,792,631,221.82/157,878.03
  6. Step 6: Final answer
    x = 119,032.59

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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.