Home / 86,222.40-128,572.14-75,735.34

Finding the Fourth Proportional to 86,222.40, 128,572.14 and 75,735.34

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Solution

The fourth proportional to 86,222.40, 128,572.14 and 75,735.34 is: 112,934.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,222.40 : 128,572.14 = 75,735.34 : x
  2. Step 2: Convert to fraction form
    86,222.40/128,572.14 = 75,735.34/x
  3. Step 3: Cross multiply
    86,222.40x = 128,572.14 × 75,735.34
  4. Step 4: Simplify right side
    86,222.40x = 9,737,454,737.43
  5. Step 5: Solve for x
    x = 9,737,454,737.43/86,222.40
  6. Step 6: Final answer
    x = 112,934.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.