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Finding the Fourth Proportional to 104,030.40, 156,045.60 and 64,081.20

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Solution

The fourth proportional to 104,030.40, 156,045.60 and 64,081.20 is: 96,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,030.40 : 156,045.60 = 64,081.20 : x
  2. Step 2: Convert to fraction form
    104,030.40/156,045.60 = 64,081.20/x
  3. Step 3: Cross multiply
    104,030.40x = 156,045.60 × 64,081.20
  4. Step 4: Simplify right side
    104,030.40x = 9,999,589,302.72
  5. Step 5: Solve for x
    x = 9,999,589,302.72/104,030.40
  6. Step 6: Final answer
    x = 96,121.80

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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.