Home / 86,004,676.42-128,357,259.51-80,173,185.92

Finding the Fourth Proportional to 86,004,676.42, 128,357,259.51 and 80,173,185.92

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Solution

The fourth proportional to 86,004,676.42, 128,357,259.51 and 80,173,185.92 is: 119,654,079.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,004,676.42 : 128,357,259.51 = 80,173,185.92 : x
  2. Step 2: Convert to fraction form
    86,004,676.42/128,357,259.51 = 80,173,185.92/x
  3. Step 3: Cross multiply
    86,004,676.42x = 128,357,259.51 × 80,173,185.92
  4. Step 4: Simplify right side
    86,004,676.42x = 10,290,810,430,876,918
  5. Step 5: Solve for x
    x = 10,290,810,430,876,918/86,004,676.42
  6. Step 6: Final answer
    x = 119,654,079.98

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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.