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Finding the Fourth Proportional to 172,590.95, 238,118.43 and 100,920.23

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Solution

The fourth proportional to 172,590.95, 238,118.43 and 100,920.23 is: 139,236.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,590.95 : 238,118.43 = 100,920.23 : x
  2. Step 2: Convert to fraction form
    172,590.95/238,118.43 = 100,920.23/x
  3. Step 3: Cross multiply
    172,590.95x = 238,118.43 × 100,920.23
  4. Step 4: Simplify right side
    172,590.95x = 24,030,966,803.64
  5. Step 5: Solve for x
    x = 24,030,966,803.64/172,590.95
  6. Step 6: Final answer
    x = 139,236.54

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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.