Home / 157,899.74-217,916.88-86,290.61

Finding the Fourth Proportional to 157,899.74, 217,916.88 and 86,290.61

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Solution

The fourth proportional to 157,899.74, 217,916.88 and 86,290.61 is: 119,089.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,899.74 : 217,916.88 = 86,290.61 : x
  2. Step 2: Convert to fraction form
    157,899.74/217,916.88 = 86,290.61/x
  3. Step 3: Cross multiply
    157,899.74x = 217,916.88 × 86,290.61
  4. Step 4: Simplify right side
    157,899.74x = 18,804,180,504.50
  5. Step 5: Solve for x
    x = 18,804,180,504.50/157,899.74
  6. Step 6: Final answer
    x = 119,089.37

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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.