Home / 139,760,320.40-209,640,480.60-42,715,840.40

Finding the Fourth Proportional to 139,760,320.40, 209,640,480.60 and 42,715,840.40

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Solution

The fourth proportional to 139,760,320.40, 209,640,480.60 and 42,715,840.40 is: 64,073,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,760,320.40 : 209,640,480.60 = 42,715,840.40 : x
  2. Step 2: Convert to fraction form
    139,760,320.40/209,640,480.60 = 42,715,840.40/x
  3. Step 3: Cross multiply
    139,760,320.40x = 209,640,480.60 × 42,715,840.40
  4. Step 4: Simplify right side
    139,760,320.40x = 8,954,969,310,688,896
  5. Step 5: Solve for x
    x = 8,954,969,310,688,896/139,760,320.40
  6. Step 6: Final answer
    x = 64,073,760.60

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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.