Home / 139,522,961.40-209,284,442.10-42,477,898.20

Finding the Fourth Proportional to 139,522,961.40, 209,284,442.10 and 42,477,898.20

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Solution

The fourth proportional to 139,522,961.40, 209,284,442.10 and 42,477,898.20 is: 63,716,847.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,522,961.40 : 209,284,442.10 = 42,477,898.20 : x
  2. Step 2: Convert to fraction form
    139,522,961.40/209,284,442.10 = 42,477,898.20/x
  3. Step 3: Cross multiply
    139,522,961.40x = 209,284,442.10 × 42,477,898.20
  4. Step 4: Simplify right side
    139,522,961.40x = 8,889,963,226,367,595
  5. Step 5: Solve for x
    x = 8,889,963,226,367,595/139,522,961.40
  6. Step 6: Final answer
    x = 63,716,847.30

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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.