Home / 130,309,881.20-195,464,821.80-86,660,860.40

Finding the Fourth Proportional to 130,309,881.20, 195,464,821.80 and 86,660,860.40

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Solution

The fourth proportional to 130,309,881.20, 195,464,821.80 and 86,660,860.40 is: 129,991,290.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,309,881.20 : 195,464,821.80 = 86,660,860.40 : x
  2. Step 2: Convert to fraction form
    130,309,881.20/195,464,821.80 = 86,660,860.40/x
  3. Step 3: Cross multiply
    130,309,881.20x = 195,464,821.80 × 86,660,860.40
  4. Step 4: Simplify right side
    130,309,881.20x = 16,939,149,635,120,678
  5. Step 5: Solve for x
    x = 16,939,149,635,120,678/130,309,881.20
  6. Step 6: Final answer
    x = 129,991,290.60

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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.