Home / 99,143.44-136,809.48-56,695.12

Finding the Fourth Proportional to 99,143.44, 136,809.48 and 56,695.12

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Solution

The fourth proportional to 99,143.44, 136,809.48 and 56,695.12 is: 78,234.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,143.44 : 136,809.48 = 56,695.12 : x
  2. Step 2: Convert to fraction form
    99,143.44/136,809.48 = 56,695.12/x
  3. Step 3: Cross multiply
    99,143.44x = 136,809.48 × 56,695.12
  4. Step 4: Simplify right side
    99,143.44x = 7,756,429,885.74
  5. Step 5: Solve for x
    x = 7,756,429,885.74/99,143.44
  6. Step 6: Final answer
    x = 78,234.42

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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.