Home / 99,861.07-137,809.22-56,838.46

Finding the Fourth Proportional to 99,861.07, 137,809.22 and 56,838.46

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Solution

The fourth proportional to 99,861.07, 137,809.22 and 56,838.46 is: 78,437.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,861.07 : 137,809.22 = 56,838.46 : x
  2. Step 2: Convert to fraction form
    99,861.07/137,809.22 = 56,838.46/x
  3. Step 3: Cross multiply
    99,861.07x = 137,809.22 × 56,838.46
  4. Step 4: Simplify right side
    99,861.07x = 7,832,863,554.41
  5. Step 5: Solve for x
    x = 7,832,863,554.41/99,861.07
  6. Step 6: Final answer
    x = 78,437.61

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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.