Home / 139,005,766.36-191,147,712.88-120,639,165.40

Finding the Fourth Proportional to 139,005,766.36, 191,147,712.88 and 120,639,165.40

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Solution

The fourth proportional to 139,005,766.36, 191,147,712.88 and 120,639,165.40 is: 165,891,683.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,005,766.36 : 191,147,712.88 = 120,639,165.40 : x
  2. Step 2: Convert to fraction form
    139,005,766.36/191,147,712.88 = 120,639,165.40/x
  3. Step 3: Cross multiply
    139,005,766.36x = 191,147,712.88 × 120,639,165.40
  4. Step 4: Simplify right side
    139,005,766.36x = 23,059,900,549,962,032
  5. Step 5: Solve for x
    x = 23,059,900,549,962,032/139,005,766.36
  6. Step 6: Final answer
    x = 165,891,683.16

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.