Home / 122,111.60-183,167.40-86,682.20

Finding the Fourth Proportional to 122,111.60, 183,167.40 and 86,682.20

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Solution

The fourth proportional to 122,111.60, 183,167.40 and 86,682.20 is: 130,023.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,111.60 : 183,167.40 = 86,682.20 : x
  2. Step 2: Convert to fraction form
    122,111.60/183,167.40 = 86,682.20/x
  3. Step 3: Cross multiply
    122,111.60x = 183,167.40 × 86,682.20
  4. Step 4: Simplify right side
    122,111.60x = 15,877,353,200.28
  5. Step 5: Solve for x
    x = 15,877,353,200.28/122,111.60
  6. Step 6: Final answer
    x = 130,023.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.