Home / 118,129.19-163,015.34-64,415.25

Finding the Fourth Proportional to 118,129.19, 163,015.34 and 64,415.25

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Solution

The fourth proportional to 118,129.19, 163,015.34 and 64,415.25 is: 88,891.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,129.19 : 163,015.34 = 64,415.25 : x
  2. Step 2: Convert to fraction form
    118,129.19/163,015.34 = 64,415.25/x
  3. Step 3: Cross multiply
    118,129.19x = 163,015.34 × 64,415.25
  4. Step 4: Simplify right side
    118,129.19x = 10,500,673,557.86
  5. Step 5: Solve for x
    x = 10,500,673,557.86/118,129.19
  6. Step 6: Final answer
    x = 88,891.44

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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.