Home / 99,686.60-137,570.58-57,253.64

Finding the Fourth Proportional to 99,686.60, 137,570.58 and 57,253.64

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Solution

The fourth proportional to 99,686.60, 137,570.58 and 57,253.64 is: 79,011.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,686.60 : 137,570.58 = 57,253.64 : x
  2. Step 2: Convert to fraction form
    99,686.60/137,570.58 = 57,253.64/x
  3. Step 3: Cross multiply
    99,686.60x = 137,570.58 × 57,253.64
  4. Step 4: Simplify right side
    99,686.60x = 7,876,416,461.91
  5. Step 5: Solve for x
    x = 7,876,416,461.91/99,686.60
  6. Step 6: Final answer
    x = 79,011.79

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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.