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Finding the Fourth Proportional to 104,045.40, 156,068.10 and 83,309.40

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Solution

The fourth proportional to 104,045.40, 156,068.10 and 83,309.40 is: 124,964.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,045.40 : 156,068.10 = 83,309.40 : x
  2. Step 2: Convert to fraction form
    104,045.40/156,068.10 = 83,309.40/x
  3. Step 3: Cross multiply
    104,045.40x = 156,068.10 × 83,309.40
  4. Step 4: Simplify right side
    104,045.40x = 13,001,939,770.14
  5. Step 5: Solve for x
    x = 13,001,939,770.14/104,045.40
  6. Step 6: Final answer
    x = 124,964.10

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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.