Home / 139,272,570.40-208,908,855.60-120,140,694.40

Finding the Fourth Proportional to 139,272,570.40, 208,908,855.60 and 120,140,694.40

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Solution

The fourth proportional to 139,272,570.40, 208,908,855.60 and 120,140,694.40 is: 180,211,041.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,272,570.40 : 208,908,855.60 = 120,140,694.40 : x
  2. Step 2: Convert to fraction form
    139,272,570.40/208,908,855.60 = 120,140,694.40/x
  3. Step 3: Cross multiply
    139,272,570.40x = 208,908,855.60 × 120,140,694.40
  4. Step 4: Simplify right side
    139,272,570.40x = 25,098,454,978,093,328
  5. Step 5: Solve for x
    x = 25,098,454,978,093,328/139,272,570.40
  6. Step 6: Final answer
    x = 180,211,041.60

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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.