Home / 103,077.20-154,615.80-61,605.20

Finding the Fourth Proportional to 103,077.20, 154,615.80 and 61,605.20

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Solution

The fourth proportional to 103,077.20, 154,615.80 and 61,605.20 is: 92,407.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,077.20 : 154,615.80 = 61,605.20 : x
  2. Step 2: Convert to fraction form
    103,077.20/154,615.80 = 61,605.20/x
  3. Step 3: Cross multiply
    103,077.20x = 154,615.80 × 61,605.20
  4. Step 4: Simplify right side
    103,077.20x = 9,525,137,282.16
  5. Step 5: Solve for x
    x = 9,525,137,282.16/103,077.20
  6. Step 6: Final answer
    x = 92,407.80

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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.