Home / 86,852.13-129,329.16-83,660.05

Finding the Fourth Proportional to 86,852.13, 129,329.16 and 83,660.05

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Solution

The fourth proportional to 86,852.13, 129,329.16 and 83,660.05 is: 124,575.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,852.13 : 129,329.16 = 83,660.05 : x
  2. Step 2: Convert to fraction form
    86,852.13/129,329.16 = 83,660.05/x
  3. Step 3: Cross multiply
    86,852.13x = 129,329.16 × 83,660.05
  4. Step 4: Simplify right side
    86,852.13x = 10,819,683,992.06
  5. Step 5: Solve for x
    x = 10,819,683,992.06/86,852.13
  6. Step 6: Final answer
    x = 124,575.92

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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.