Home / 157,763.18-217,712.05-86,143.14

Finding the Fourth Proportional to 157,763.18, 217,712.05 and 86,143.14

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Solution

The fourth proportional to 157,763.18, 217,712.05 and 86,143.14 is: 118,876.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,763.18 : 217,712.05 = 86,143.14 : x
  2. Step 2: Convert to fraction form
    157,763.18/217,712.05 = 86,143.14/x
  3. Step 3: Cross multiply
    157,763.18x = 217,712.05 × 86,143.14
  4. Step 4: Simplify right side
    157,763.18x = 18,754,399,602.84
  5. Step 5: Solve for x
    x = 18,754,399,602.84/157,763.18
  6. Step 6: Final answer
    x = 118,876.91

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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.