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Finding the Fourth Proportional to 112,686, 155,507.76 and 62,386.08

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Solution

The fourth proportional to 112,686, 155,507.76 and 62,386.08 is: 86,093.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,686 : 155,507.76 = 62,386.08 : x
  2. Step 2: Convert to fraction form
    112,686/155,507.76 = 62,386.08/x
  3. Step 3: Cross multiply
    112,686x = 155,507.76 × 62,386.08
  4. Step 4: Simplify right side
    112,686x = 9,701,519,555.98
  5. Step 5: Solve for x
    x = 9,701,519,555.98/112,686
  6. Step 6: Final answer
    x = 86,093.39

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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.