Home / 89,619,191.60-134,428,787.40-85,140,215.60

Finding the Fourth Proportional to 89,619,191.60, 134,428,787.40 and 85,140,215.60

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Solution

The fourth proportional to 89,619,191.60, 134,428,787.40 and 85,140,215.60 is: 127,710,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,619,191.60 : 134,428,787.40 = 85,140,215.60 : x
  2. Step 2: Convert to fraction form
    89,619,191.60/134,428,787.40 = 85,140,215.60/x
  3. Step 3: Cross multiply
    89,619,191.60x = 134,428,787.40 × 85,140,215.60
  4. Step 4: Simplify right side
    89,619,191.60x = 11,445,295,942,082,564
  5. Step 5: Solve for x
    x = 11,445,295,942,082,564/89,619,191.60
  6. Step 6: Final answer
    x = 127,710,323.40

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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.