Home / 119,111,808.40-178,667,712.60-78,297,139.60

Finding the Fourth Proportional to 119,111,808.40, 178,667,712.60 and 78,297,139.60

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Solution

The fourth proportional to 119,111,808.40, 178,667,712.60 and 78,297,139.60 is: 117,445,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,111,808.40 : 178,667,712.60 = 78,297,139.60 : x
  2. Step 2: Convert to fraction form
    119,111,808.40/178,667,712.60 = 78,297,139.60/x
  3. Step 3: Cross multiply
    119,111,808.40x = 178,667,712.60 × 78,297,139.60
  4. Step 4: Simplify right side
    119,111,808.40x = 13,989,170,835,454,878
  5. Step 5: Solve for x
    x = 13,989,170,835,454,878/119,111,808.40
  6. Step 6: Final answer
    x = 117,445,709.40

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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.