Home / 121,927.20-183,328.20-102,681.60

Finding the Fourth Proportional to 121,927.20, 183,328.20 and 102,681.60

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Solution

The fourth proportional to 121,927.20, 183,328.20 and 102,681.60 is: 154,390.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,927.20 : 183,328.20 = 102,681.60 : x
  2. Step 2: Convert to fraction form
    121,927.20/183,328.20 = 102,681.60/x
  3. Step 3: Cross multiply
    121,927.20x = 183,328.20 × 102,681.60
  4. Step 4: Simplify right side
    121,927.20x = 18,824,432,901.12
  5. Step 5: Solve for x
    x = 18,824,432,901.12/121,927.20
  6. Step 6: Final answer
    x = 154,390.76

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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.