Home / 118,607.08-163,745.46-78,437.36

Finding the Fourth Proportional to 118,607.08, 163,745.46 and 78,437.36

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Solution

The fourth proportional to 118,607.08, 163,745.46 and 78,437.36 is: 108,288.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,607.08 : 163,745.46 = 78,437.36 : x
  2. Step 2: Convert to fraction form
    118,607.08/163,745.46 = 78,437.36/x
  3. Step 3: Cross multiply
    118,607.08x = 163,745.46 × 78,437.36
  4. Step 4: Simplify right side
    118,607.08x = 12,843,761,594.39
  5. Step 5: Solve for x
    x = 12,843,761,594.39/118,607.08
  6. Step 6: Final answer
    x = 108,288.32

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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.