Home / 104,913.40-156,986.10-77,265.40

Finding the Fourth Proportional to 104,913.40, 156,986.10 and 77,265.40

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Solution

The fourth proportional to 104,913.40, 156,986.10 and 77,265.40 is: 115,615.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,913.40 : 156,986.10 = 77,265.40 : x
  2. Step 2: Convert to fraction form
    104,913.40/156,986.10 = 77,265.40/x
  3. Step 3: Cross multiply
    104,913.40x = 156,986.10 × 77,265.40
  4. Step 4: Simplify right side
    104,913.40x = 12,129,593,810.94
  5. Step 5: Solve for x
    x = 12,129,593,810.94/104,913.40
  6. Step 6: Final answer
    x = 115,615.30

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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.