Home / 130,652.80-195,590.40-86,329.60

Finding the Fourth Proportional to 130,652.80, 195,590.40 and 86,329.60

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Solution

The fourth proportional to 130,652.80, 195,590.40 and 86,329.60 is: 129,237.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,652.80 : 195,590.40 = 86,329.60 : x
  2. Step 2: Convert to fraction form
    130,652.80/195,590.40 = 86,329.60/x
  3. Step 3: Cross multiply
    130,652.80x = 195,590.40 × 86,329.60
  4. Step 4: Simplify right side
    130,652.80x = 16,885,240,995.84
  5. Step 5: Solve for x
    x = 16,885,240,995.84/130,652.80
  6. Step 6: Final answer
    x = 129,237.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.