Home / 80,167,345.20-120,251,017.80-68,688,219.60

Finding the Fourth Proportional to 80,167,345.20, 120,251,017.80 and 68,688,219.60

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Solution

The fourth proportional to 80,167,345.20, 120,251,017.80 and 68,688,219.60 is: 103,032,329.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,167,345.20 : 120,251,017.80 = 68,688,219.60 : x
  2. Step 2: Convert to fraction form
    80,167,345.20/120,251,017.80 = 68,688,219.60/x
  3. Step 3: Cross multiply
    80,167,345.20x = 120,251,017.80 × 68,688,219.60
  4. Step 4: Simplify right side
    80,167,345.20x = 8,259,828,317,769,908
  5. Step 5: Solve for x
    x = 8,259,828,317,769,908/80,167,345.20
  6. Step 6: Final answer
    x = 103,032,329.40

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1.5x scale

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.