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Finding the Fourth Proportional to 163,570.76, 225,899 and 112,715.72

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Solution

The fourth proportional to 163,570.76, 225,899 and 112,715.72 is: 155,665.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,570.76 : 225,899 = 112,715.72 : x
  2. Step 2: Convert to fraction form
    163,570.76/225,899 = 112,715.72/x
  3. Step 3: Cross multiply
    163,570.76x = 225,899 × 112,715.72
  4. Step 4: Simplify right side
    163,570.76x = 25,462,368,432.28
  5. Step 5: Solve for x
    x = 25,462,368,432.28/163,570.76
  6. Step 6: Final answer
    x = 155,665.77

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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.