Home / 82,494,803.70-123,742,205.55-81,219,345.30

Finding the Fourth Proportional to 82,494,803.70, 123,742,205.55 and 81,219,345.30

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Solution

The fourth proportional to 82,494,803.70, 123,742,205.55 and 81,219,345.30 is: 121,829,017.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,494,803.70 : 123,742,205.55 = 81,219,345.30 : x
  2. Step 2: Convert to fraction form
    82,494,803.70/123,742,205.55 = 81,219,345.30/x
  3. Step 3: Cross multiply
    82,494,803.70x = 123,742,205.55 × 81,219,345.30
  4. Step 4: Simplify right side
    82,494,803.70x = 10,050,260,920,749,026
  5. Step 5: Solve for x
    x = 10,050,260,920,749,026/82,494,803.70
  6. Step 6: Final answer
    x = 121,829,017.95

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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.