Home / 123,670,358.10-185,688,589.05-69,191,750.70

Finding the Fourth Proportional to 123,670,358.10, 185,688,589.05 and 69,191,750.70

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Solution

The fourth proportional to 123,670,358.10, 185,688,589.05 and 69,191,750.70 is: 103,890,040.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,670,358.10 : 185,688,589.05 = 69,191,750.70 : x
  2. Step 2: Convert to fraction form
    123,670,358.10/185,688,589.05 = 69,191,750.70/x
  3. Step 3: Cross multiply
    123,670,358.10x = 185,688,589.05 × 69,191,750.70
  4. Step 4: Simplify right side
    123,670,358.10x = 12,848,118,561,382,352
  5. Step 5: Solve for x
    x = 12,848,118,561,382,352/123,670,358.10
  6. Step 6: Final answer
    x = 103,890,040.90

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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.