Home / 86,004,675.42-128,357,258.02-80,173,184.92

Finding the Fourth Proportional to 86,004,675.42, 128,357,258.02 and 80,173,184.92

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Solution

The fourth proportional to 86,004,675.42, 128,357,258.02 and 80,173,184.92 is: 119,654,078.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,004,675.42 : 128,357,258.02 = 80,173,184.92 : x
  2. Step 2: Convert to fraction form
    86,004,675.42/128,357,258.02 = 80,173,184.92/x
  3. Step 3: Cross multiply
    86,004,675.42x = 128,357,258.02 × 80,173,184.92
  4. Step 4: Simplify right side
    86,004,675.42x = 10,290,810,183,061,612
  5. Step 5: Solve for x
    x = 10,290,810,183,061,612/86,004,675.42
  6. Step 6: Final answer
    x = 119,654,078.49

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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.