Home / 139,968,412.30-209,952,618.45-78,494,466.70

Finding the Fourth Proportional to 139,968,412.30, 209,952,618.45 and 78,494,466.70

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Solution

The fourth proportional to 139,968,412.30, 209,952,618.45 and 78,494,466.70 is: 117,741,700.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,412.30 : 209,952,618.45 = 78,494,466.70 : x
  2. Step 2: Convert to fraction form
    139,968,412.30/209,952,618.45 = 78,494,466.70/x
  3. Step 3: Cross multiply
    139,968,412.30x = 209,952,618.45 × 78,494,466.70
  4. Step 4: Simplify right side
    139,968,412.30x = 16,480,118,817,501,330
  5. Step 5: Solve for x
    x = 16,480,118,817,501,330/139,968,412.30
  6. Step 6: Final answer
    x = 117,741,700.05

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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.