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Finding the Fourth Proportional to 110,715.49, 152,719.19 and 78,894.67

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Solution

The fourth proportional to 110,715.49, 152,719.19 and 78,894.67 is: 108,826.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,715.49 : 152,719.19 = 78,894.67 : x
  2. Step 2: Convert to fraction form
    110,715.49/152,719.19 = 78,894.67/x
  3. Step 3: Cross multiply
    110,715.49x = 152,719.19 × 78,894.67
  4. Step 4: Simplify right side
    110,715.49x = 12,048,729,703.24
  5. Step 5: Solve for x
    x = 12,048,729,703.24/110,715.49
  6. Step 6: Final answer
    x = 108,826.05

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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.