Home / 139,522,145.40-209,283,218.10-42,477,082.20

Finding the Fourth Proportional to 139,522,145.40, 209,283,218.10 and 42,477,082.20

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Solution

The fourth proportional to 139,522,145.40, 209,283,218.10 and 42,477,082.20 is: 63,715,623.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,522,145.40 : 209,283,218.10 = 42,477,082.20 : x
  2. Step 2: Convert to fraction form
    139,522,145.40/209,283,218.10 = 42,477,082.20/x
  3. Step 3: Cross multiply
    139,522,145.40x = 209,283,218.10 × 42,477,082.20
  4. Step 4: Simplify right side
    139,522,145.40x = 8,889,740,458,314,228
  5. Step 5: Solve for x
    x = 8,889,740,458,314,228/139,522,145.40
  6. Step 6: Final answer
    x = 63,715,623.30

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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.