Home / 172,688.12-238,218.39-118,879.72

Finding the Fourth Proportional to 172,688.12, 238,218.39 and 118,879.72

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Solution

The fourth proportional to 172,688.12, 238,218.39 and 118,879.72 is: 163,991.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,688.12 : 238,218.39 = 118,879.72 : x
  2. Step 2: Convert to fraction form
    172,688.12/238,218.39 = 118,879.72/x
  3. Step 3: Cross multiply
    172,688.12x = 238,218.39 × 118,879.72
  4. Step 4: Simplify right side
    172,688.12x = 28,319,335,502.05
  5. Step 5: Solve for x
    x = 28,319,335,502.05/172,688.12
  6. Step 6: Final answer
    x = 163,991.22

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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.