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Finding the Fourth Proportional to 112,687.70, 155,509.02 and 62,386.70

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Solution

The fourth proportional to 112,687.70, 155,509.02 and 62,386.70 is: 86,093.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,687.70 : 155,509.02 = 62,386.70 : x
  2. Step 2: Convert to fraction form
    112,687.70/155,509.02 = 62,386.70/x
  3. Step 3: Cross multiply
    112,687.70x = 155,509.02 × 62,386.70
  4. Step 4: Simplify right side
    112,687.70x = 9,701,694,578.03
  5. Step 5: Solve for x
    x = 9,701,694,578.03/112,687.70
  6. Step 6: Final answer
    x = 86,093.64

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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.