Home / 99,341.12-137,120.30-56,927.90

Finding the Fourth Proportional to 99,341.12, 137,120.30 and 56,927.90

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Solution

The fourth proportional to 99,341.12, 137,120.30 and 56,927.90 is: 78,577.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,341.12 : 137,120.30 = 56,927.90 : x
  2. Step 2: Convert to fraction form
    99,341.12/137,120.30 = 56,927.90/x
  3. Step 3: Cross multiply
    99,341.12x = 137,120.30 × 56,927.90
  4. Step 4: Simplify right side
    99,341.12x = 7,805,969,756.13
  5. Step 5: Solve for x
    x = 7,805,969,756.13/99,341.12
  6. Step 6: Final answer
    x = 78,577.43

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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.