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Finding the Fourth Proportional to 115,263.71, 159,064.61 and 64,279.66

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Solution

The fourth proportional to 115,263.71, 159,064.61 and 64,279.66 is: 88,706.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,263.71 : 159,064.61 = 64,279.66 : x
  2. Step 2: Convert to fraction form
    115,263.71/159,064.61 = 64,279.66/x
  3. Step 3: Cross multiply
    115,263.71x = 159,064.61 × 64,279.66
  4. Step 4: Simplify right side
    115,263.71x = 10,224,619,048.83
  5. Step 5: Solve for x
    x = 10,224,619,048.83/115,263.71
  6. Step 6: Final answer
    x = 88,706.32

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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.