Home / 86,686.57-119,444.39-77,152.33

Finding the Fourth Proportional to 86,686.57, 119,444.39 and 77,152.33

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Solution

The fourth proportional to 86,686.57, 119,444.39 and 77,152.33 is: 106,307.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,686.57 : 119,444.39 = 77,152.33 : x
  2. Step 2: Convert to fraction form
    86,686.57/119,444.39 = 77,152.33/x
  3. Step 3: Cross multiply
    86,686.57x = 119,444.39 × 77,152.33
  4. Step 4: Simplify right side
    86,686.57x = 9,215,412,608.17
  5. Step 5: Solve for x
    x = 9,215,412,608.17/86,686.57
  6. Step 6: Final answer
    x = 106,307.27

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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.