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Finding the Fourth Proportional to 115,364.63, 159,203.22 and 63,681.76

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Solution

The fourth proportional to 115,364.63, 159,203.22 and 63,681.76 is: 87,880.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,364.63 : 159,203.22 = 63,681.76 : x
  2. Step 2: Convert to fraction form
    115,364.63/159,203.22 = 63,681.76/x
  3. Step 3: Cross multiply
    115,364.63x = 159,203.22 × 63,681.76
  4. Step 4: Simplify right side
    115,364.63x = 10,138,341,267.17
  5. Step 5: Solve for x
    x = 10,138,341,267.17/115,364.63
  6. Step 6: Final answer
    x = 87,880.85

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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.