Home / 149,830.57-206,772.47-86,168.42

Finding the Fourth Proportional to 149,830.57, 206,772.47 and 86,168.42

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Solution

The fourth proportional to 149,830.57, 206,772.47 and 86,168.42 is: 118,916.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,830.57 : 206,772.47 = 86,168.42 : x
  2. Step 2: Convert to fraction form
    149,830.57/206,772.47 = 86,168.42/x
  3. Step 3: Cross multiply
    149,830.57x = 206,772.47 × 86,168.42
  4. Step 4: Simplify right side
    149,830.57x = 17,817,255,897.82
  5. Step 5: Solve for x
    x = 17,817,255,897.82/149,830.57
  6. Step 6: Final answer
    x = 118,916.03

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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.