Home / 139,372,806.16-209,087,115.36-78,049,173.04

Finding the Fourth Proportional to 139,372,806.16, 209,087,115.36 and 78,049,173.04

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Solution

The fourth proportional to 139,372,806.16, 209,087,115.36 and 78,049,173.04 is: 117,089,387.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,372,806.16 : 209,087,115.36 = 78,049,173.04 : x
  2. Step 2: Convert to fraction form
    139,372,806.16/209,087,115.36 = 78,049,173.04/x
  3. Step 3: Cross multiply
    139,372,806.16x = 209,087,115.36 × 78,049,173.04
  4. Step 4: Simplify right side
    139,372,806.16x = 16,319,076,447,167,084
  5. Step 5: Solve for x
    x = 16,319,076,447,167,084/139,372,806.16
  6. Step 6: Final answer
    x = 117,089,387.07

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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.