Home / 112,774.23-155,628.44-61,788.90

Finding the Fourth Proportional to 112,774.23, 155,628.44 and 61,788.90

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Solution

The fourth proportional to 112,774.23, 155,628.44 and 61,788.90 is: 85,268.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,774.23 : 155,628.44 = 61,788.90 : x
  2. Step 2: Convert to fraction form
    112,774.23/155,628.44 = 61,788.90/x
  3. Step 3: Cross multiply
    112,774.23x = 155,628.44 × 61,788.90
  4. Step 4: Simplify right side
    112,774.23x = 9,616,109,455.47
  5. Step 5: Solve for x
    x = 9,616,109,455.47/112,774.23
  6. Step 6: Final answer
    x = 85,268.67

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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.