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Finding the Fourth Proportional to 121,329.70, 181,994.55 and 62,280.70

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Solution

The fourth proportional to 121,329.70, 181,994.55 and 62,280.70 is: 93,421.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,329.70 : 181,994.55 = 62,280.70 : x
  2. Step 2: Convert to fraction form
    121,329.70/181,994.55 = 62,280.70/x
  3. Step 3: Cross multiply
    121,329.70x = 181,994.55 × 62,280.70
  4. Step 4: Simplify right side
    121,329.70x = 11,334,747,970.19
  5. Step 5: Solve for x
    x = 11,334,747,970.19/121,329.70
  6. Step 6: Final answer
    x = 93,421.05

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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.