Home / 139,872,005.20-209,808,007.80-137,184,619.60

Finding the Fourth Proportional to 139,872,005.20, 209,808,007.80 and 137,184,619.60

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Solution

The fourth proportional to 139,872,005.20, 209,808,007.80 and 137,184,619.60 is: 205,776,929.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,872,005.20 : 209,808,007.80 = 137,184,619.60 : x
  2. Step 2: Convert to fraction form
    139,872,005.20/209,808,007.80 = 137,184,619.60/x
  3. Step 3: Cross multiply
    139,872,005.20x = 209,808,007.80 × 137,184,619.60
  4. Step 4: Simplify right side
    139,872,005.20x = 28,782,431,739,076,832
  5. Step 5: Solve for x
    x = 28,782,431,739,076,832/139,872,005.20
  6. Step 6: Final answer
    x = 205,776,929.40

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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.