Home / 172,690.12-238,221.15-118,881.72

Finding the Fourth Proportional to 172,690.12, 238,221.15 and 118,881.72

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Solution

The fourth proportional to 172,690.12, 238,221.15 and 118,881.72 is: 163,993.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,690.12 : 238,221.15 = 118,881.72 : x
  2. Step 2: Convert to fraction form
    172,690.12/238,221.15 = 118,881.72/x
  3. Step 3: Cross multiply
    172,690.12x = 238,221.15 × 118,881.72
  4. Step 4: Simplify right side
    172,690.12x = 28,320,140,052.38
  5. Step 5: Solve for x
    x = 28,320,140,052.38/172,690.12
  6. Step 6: Final answer
    x = 163,993.98

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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.