Home / 112,911.84-155,821.20-61,926.60

Finding the Fourth Proportional to 112,911.84, 155,821.20 and 61,926.60

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Solution

The fourth proportional to 112,911.84, 155,821.20 and 61,926.60 is: 85,460.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,911.84 : 155,821.20 = 61,926.60 : x
  2. Step 2: Convert to fraction form
    112,911.84/155,821.20 = 61,926.60/x
  3. Step 3: Cross multiply
    112,911.84x = 155,821.20 × 61,926.60
  4. Step 4: Simplify right side
    112,911.84x = 9,649,477,123.92
  5. Step 5: Solve for x
    x = 9,649,477,123.92/112,911.84
  6. Step 6: Final answer
    x = 85,460.28

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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.