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Finding the Fourth Proportional to 112,920.86, 155,830.32 and 61,932.24

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Solution

The fourth proportional to 112,920.86, 155,830.32 and 61,932.24 is: 85,466.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,920.86 : 155,830.32 = 61,932.24 : x
  2. Step 2: Convert to fraction form
    112,920.86/155,830.32 = 61,932.24/x
  3. Step 3: Cross multiply
    112,920.86x = 155,830.32 × 61,932.24
  4. Step 4: Simplify right side
    112,920.86x = 9,650,920,777.52
  5. Step 5: Solve for x
    x = 9,650,920,777.52/112,920.86
  6. Step 6: Final answer
    x = 85,466.23

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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.