Home / 99,564.08-137,395.32-57,123.32

Finding the Fourth Proportional to 99,564.08, 137,395.32 and 57,123.32

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Solution

The fourth proportional to 99,564.08, 137,395.32 and 57,123.32 is: 78,828.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,564.08 : 137,395.32 = 57,123.32 : x
  2. Step 2: Convert to fraction form
    99,564.08/137,395.32 = 57,123.32/x
  3. Step 3: Cross multiply
    99,564.08x = 137,395.32 × 57,123.32
  4. Step 4: Simplify right side
    99,564.08x = 7,848,476,830.86
  5. Step 5: Solve for x
    x = 7,848,476,830.86/99,564.08
  6. Step 6: Final answer
    x = 78,828.40

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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.