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Finding the Fourth Proportional to 173,118.90, 259,587.90 and 78,303.79

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Solution

The fourth proportional to 173,118.90, 259,587.90 and 78,303.79 is: 117,414.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,118.90 : 259,587.90 = 78,303.79 : x
  2. Step 2: Convert to fraction form
    173,118.90/259,587.90 = 78,303.79/x
  3. Step 3: Cross multiply
    173,118.90x = 259,587.90 × 78,303.79
  4. Step 4: Simplify right side
    173,118.90x = 20,326,716,732.63
  5. Step 5: Solve for x
    x = 20,326,716,732.63/173,118.90
  6. Step 6: Final answer
    x = 117,414.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.