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Finding the Fourth Proportional to 115,316.51, 159,152.58 and 67,588.88

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Solution

The fourth proportional to 115,316.51, 159,152.58 and 67,588.88 is: 93,281.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,316.51 : 159,152.58 = 67,588.88 : x
  2. Step 2: Convert to fraction form
    115,316.51/159,152.58 = 67,588.88/x
  3. Step 3: Cross multiply
    115,316.51x = 159,152.58 × 67,588.88
  4. Step 4: Simplify right side
    115,316.51x = 10,756,943,835.55
  5. Step 5: Solve for x
    x = 10,756,943,835.55/115,316.51
  6. Step 6: Final answer
    x = 93,281.91

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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.