Home / 157,899.24-217,916.19-86,290.11

Finding the Fourth Proportional to 157,899.24, 217,916.19 and 86,290.11

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Solution

The fourth proportional to 157,899.24, 217,916.19 and 86,290.11 is: 119,088.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,899.24 : 217,916.19 = 86,290.11 : x
  2. Step 2: Convert to fraction form
    157,899.24/217,916.19 = 86,290.11/x
  3. Step 3: Cross multiply
    157,899.24x = 217,916.19 × 86,290.11
  4. Step 4: Simplify right side
    157,899.24x = 18,804,012,005.88
  5. Step 5: Solve for x
    x = 18,804,012,005.88/157,899.24
  6. Step 6: Final answer
    x = 119,088.68

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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.