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Finding the Fourth Proportional to 112,689, 155,511.90 and 62,389.08

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Solution

The fourth proportional to 112,689, 155,511.90 and 62,389.08 is: 86,097.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,689 : 155,511.90 = 62,389.08 : x
  2. Step 2: Convert to fraction form
    112,689/155,511.90 = 62,389.08/x
  3. Step 3: Cross multiply
    112,689x = 155,511.90 × 62,389.08
  4. Step 4: Simplify right side
    112,689x = 9,702,244,370.05
  5. Step 5: Solve for x
    x = 9,702,244,370.05/112,689
  6. Step 6: Final answer
    x = 86,097.53

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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.