Home / 99,631.26-137,486.13-56,605.11

Finding the Fourth Proportional to 99,631.26, 137,486.13 and 56,605.11

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Solution

The fourth proportional to 99,631.26, 137,486.13 and 56,605.11 is: 78,112.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,631.26 : 137,486.13 = 56,605.11 : x
  2. Step 2: Convert to fraction form
    99,631.26/137,486.13 = 56,605.11/x
  3. Step 3: Cross multiply
    99,631.26x = 137,486.13 × 56,605.11
  4. Step 4: Simplify right side
    99,631.26x = 7,782,417,512.12
  5. Step 5: Solve for x
    x = 7,782,417,512.12/99,631.26
  6. Step 6: Final answer
    x = 78,112.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.