Home / 88,639.40-122,073.54-86,704.04

Finding the Fourth Proportional to 88,639.40, 122,073.54 and 86,704.04

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Solution

The fourth proportional to 88,639.40, 122,073.54 and 86,704.04 is: 119,408.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,639.40 : 122,073.54 = 86,704.04 : x
  2. Step 2: Convert to fraction form
    88,639.40/122,073.54 = 86,704.04/x
  3. Step 3: Cross multiply
    88,639.40x = 122,073.54 × 86,704.04
  4. Step 4: Simplify right side
    88,639.40x = 10,584,269,095.10
  5. Step 5: Solve for x
    x = 10,584,269,095.10/88,639.40
  6. Step 6: Final answer
    x = 119,408.18

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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.