Home / 112,388.75-155,099.49-61,403.63

Finding the Fourth Proportional to 112,388.75, 155,099.49 and 61,403.63

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Solution

The fourth proportional to 112,388.75, 155,099.49 and 61,403.63 is: 84,738.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,388.75 : 155,099.49 = 61,403.63 : x
  2. Step 2: Convert to fraction form
    112,388.75/155,099.49 = 61,403.63/x
  3. Step 3: Cross multiply
    112,388.75x = 155,099.49 × 61,403.63
  4. Step 4: Simplify right side
    112,388.75x = 9,523,671,697.15
  5. Step 5: Solve for x
    x = 9,523,671,697.15/112,388.75
  6. Step 6: Final answer
    x = 84,738.66

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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.