Home / 129,605.12-177,688.60-127,243.16

Finding the Fourth Proportional to 129,605.12, 177,688.60 and 127,243.16

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Solution

The fourth proportional to 129,605.12, 177,688.60 and 127,243.16 is: 174,450.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,605.12 : 177,688.60 = 127,243.16 : x
  2. Step 2: Convert to fraction form
    129,605.12/177,688.60 = 127,243.16/x
  3. Step 3: Cross multiply
    129,605.12x = 177,688.60 × 127,243.16
  4. Step 4: Simplify right side
    129,605.12x = 22,609,658,959.98
  5. Step 5: Solve for x
    x = 22,609,658,959.98/129,605.12
  6. Step 6: Final answer
    x = 174,450.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.