Home / 99,666.18-137,534.58-56,644.54

Finding the Fourth Proportional to 99,666.18, 137,534.58 and 56,644.54

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Solution

The fourth proportional to 99,666.18, 137,534.58 and 56,644.54 is: 78,166.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,666.18 : 137,534.58 = 56,644.54 : x
  2. Step 2: Convert to fraction form
    99,666.18/137,534.58 = 56,644.54/x
  3. Step 3: Cross multiply
    99,666.18x = 137,534.58 × 56,644.54
  4. Step 4: Simplify right side
    99,666.18x = 7,790,582,674.36
  5. Step 5: Solve for x
    x = 7,790,582,674.36/99,666.18
  6. Step 6: Final answer
    x = 78,166.76

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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.