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Finding the Fourth Proportional to 134,488, 185,531.16 and 86,756.74

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Solution

The fourth proportional to 134,488, 185,531.16 and 86,756.74 is: 119,684.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,488 : 185,531.16 = 86,756.74 : x
  2. Step 2: Convert to fraction form
    134,488/185,531.16 = 86,756.74/x
  3. Step 3: Cross multiply
    134,488x = 185,531.16 × 86,756.74
  4. Step 4: Simplify right side
    134,488x = 16,096,078,610.02
  5. Step 5: Solve for x
    x = 16,096,078,610.02/134,488
  6. Step 6: Final answer
    x = 119,684.13

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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.