Home / 122,110.80-183,166.20-86,681.40

Finding the Fourth Proportional to 122,110.80, 183,166.20 and 86,681.40

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Solution

The fourth proportional to 122,110.80, 183,166.20 and 86,681.40 is: 130,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,110.80 : 183,166.20 = 86,681.40 : x
  2. Step 2: Convert to fraction form
    122,110.80/183,166.20 = 86,681.40/x
  3. Step 3: Cross multiply
    122,110.80x = 183,166.20 × 86,681.40
  4. Step 4: Simplify right side
    122,110.80x = 15,877,102,648.68
  5. Step 5: Solve for x
    x = 15,877,102,648.68/122,110.80
  6. Step 6: Final answer
    x = 130,022.10

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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.