Home / 86,219.40-128,567.67-75,732.33

Finding the Fourth Proportional to 86,219.40, 128,567.67 and 75,732.33

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Solution

The fourth proportional to 86,219.40, 128,567.67 and 75,732.33 is: 112,929.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,219.40 : 128,567.67 = 75,732.33 : x
  2. Step 2: Convert to fraction form
    86,219.40/128,567.67 = 75,732.33/x
  3. Step 3: Cross multiply
    86,219.40x = 128,567.67 × 75,732.33
  4. Step 4: Simplify right side
    86,219.40x = 9,736,729,211.77
  5. Step 5: Solve for x
    x = 9,736,729,211.77/86,219.40
  6. Step 6: Final answer
    x = 112,929.68

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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.