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Finding the Fourth Proportional to 103,869.60, 155,804.40 and 64,471.20

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Solution

The fourth proportional to 103,869.60, 155,804.40 and 64,471.20 is: 96,706.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,869.60 : 155,804.40 = 64,471.20 : x
  2. Step 2: Convert to fraction form
    103,869.60/155,804.40 = 64,471.20/x
  3. Step 3: Cross multiply
    103,869.60x = 155,804.40 × 64,471.20
  4. Step 4: Simplify right side
    103,869.60x = 10,044,896,633.28
  5. Step 5: Solve for x
    x = 10,044,896,633.28/103,869.60
  6. Step 6: Final answer
    x = 96,706.80

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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.