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Finding the Fourth Proportional to 104,069.60, 156,206.80 and 51,538.40

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Solution

The fourth proportional to 104,069.60, 156,206.80 and 51,538.40 is: 77,358.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,069.60 : 156,206.80 = 51,538.40 : x
  2. Step 2: Convert to fraction form
    104,069.60/156,206.80 = 51,538.40/x
  3. Step 3: Cross multiply
    104,069.60x = 156,206.80 × 51,538.40
  4. Step 4: Simplify right side
    104,069.60x = 8,050,648,541.12
  5. Step 5: Solve for x
    x = 8,050,648,541.12/104,069.60
  6. Step 6: Final answer
    x = 77,358.31

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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.