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Finding the Fourth Proportional to 121,014.70, 181,522.05 and 61,830.70

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Solution

The fourth proportional to 121,014.70, 181,522.05 and 61,830.70 is: 92,746.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,014.70 : 181,522.05 = 61,830.70 : x
  2. Step 2: Convert to fraction form
    121,014.70/181,522.05 = 61,830.70/x
  3. Step 3: Cross multiply
    121,014.70x = 181,522.05 × 61,830.70
  4. Step 4: Simplify right side
    121,014.70x = 11,223,635,416.94
  5. Step 5: Solve for x
    x = 11,223,635,416.94/121,014.70
  6. Step 6: Final answer
    x = 92,746.05

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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.