Home / 157,961.34-217,985.85-86,345.46

Finding the Fourth Proportional to 157,961.34, 217,985.85 and 86,345.46

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Solution

The fourth proportional to 157,961.34, 217,985.85 and 86,345.46 is: 119,156.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,961.34 : 217,985.85 = 86,345.46 : x
  2. Step 2: Convert to fraction form
    157,961.34/217,985.85 = 86,345.46/x
  3. Step 3: Cross multiply
    157,961.34x = 217,985.85 × 86,345.46
  4. Step 4: Simplify right side
    157,961.34x = 18,822,088,491.74
  5. Step 5: Solve for x
    x = 18,822,088,491.74/157,961.34
  6. Step 6: Final answer
    x = 119,156.30

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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.