Home / 86,814,171.20-130,221,256.80-66,720,833.60

Finding the Fourth Proportional to 86,814,171.20, 130,221,256.80 and 66,720,833.60

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Solution

The fourth proportional to 86,814,171.20, 130,221,256.80 and 66,720,833.60 is: 100,081,250.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,814,171.20 : 130,221,256.80 = 66,720,833.60 : x
  2. Step 2: Convert to fraction form
    86,814,171.20/130,221,256.80 = 66,720,833.60/x
  3. Step 3: Cross multiply
    86,814,171.20x = 130,221,256.80 × 66,720,833.60
  4. Step 4: Simplify right side
    86,814,171.20x = 8,688,470,806,135,668
  5. Step 5: Solve for x
    x = 8,688,470,806,135,668/86,814,171.20
  6. Step 6: Final answer
    x = 100,081,250.40

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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.