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Finding the Fourth Proportional to 122,666.60, 183,999.90 and 102,837.80

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Solution

The fourth proportional to 122,666.60, 183,999.90 and 102,837.80 is: 154,256.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,666.60 : 183,999.90 = 102,837.80 : x
  2. Step 2: Convert to fraction form
    122,666.60/183,999.90 = 102,837.80/x
  3. Step 3: Cross multiply
    122,666.60x = 183,999.90 × 102,837.80
  4. Step 4: Simplify right side
    122,666.60x = 18,922,144,916.22
  5. Step 5: Solve for x
    x = 18,922,144,916.22/122,666.60
  6. Step 6: Final answer
    x = 154,256.70

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1.5x scale

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.