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Finding the Fourth Proportional to 112,774.65, 155,645.60 and 65,018.67

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Solution

The fourth proportional to 112,774.65, 155,645.60 and 65,018.67 is: 89,735.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,774.65 : 155,645.60 = 65,018.67 : x
  2. Step 2: Convert to fraction form
    112,774.65/155,645.60 = 65,018.67/x
  3. Step 3: Cross multiply
    112,774.65x = 155,645.60 × 65,018.67
  4. Step 4: Simplify right side
    112,774.65x = 10,119,869,578.26
  5. Step 5: Solve for x
    x = 10,119,869,578.26/112,774.65
  6. Step 6: Final answer
    x = 89,735.32

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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.