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Finding the Fourth Proportional to 112,143.16, 154,750.50 and 64,362.88

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Solution

The fourth proportional to 112,143.16, 154,750.50 and 64,362.88 is: 88,816.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,143.16 : 154,750.50 = 64,362.88 : x
  2. Step 2: Convert to fraction form
    112,143.16/154,750.50 = 64,362.88/x
  3. Step 3: Cross multiply
    112,143.16x = 154,750.50 × 64,362.88
  4. Step 4: Simplify right side
    112,143.16x = 9,960,187,861.44
  5. Step 5: Solve for x
    x = 9,960,187,861.44/112,143.16
  6. Step 6: Final answer
    x = 88,816.72

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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.