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Finding the Fourth Proportional to 124,123.78, 184,781.89 and 123,385.78

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Solution

The fourth proportional to 124,123.78, 184,781.89 and 123,385.78 is: 183,683.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,123.78 : 184,781.89 = 123,385.78 : x
  2. Step 2: Convert to fraction form
    124,123.78/184,781.89 = 123,385.78/x
  3. Step 3: Cross multiply
    124,123.78x = 184,781.89 × 123,385.78
  4. Step 4: Simplify right side
    124,123.78x = 22,799,457,010.60
  5. Step 5: Solve for x
    x = 22,799,457,010.60/124,123.78
  6. Step 6: Final answer
    x = 183,683.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.