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Finding the Fourth Proportional to 117,903,977.20, 176,688,004.20 and 86,957,052.40

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Solution

The fourth proportional to 117,903,977.20, 176,688,004.20 and 86,957,052.40 is: 130,311,702.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,903,977.20 : 176,688,004.20 = 86,957,052.40 : x
  2. Step 2: Convert to fraction form
    117,903,977.20/176,688,004.20 = 86,957,052.40/x
  3. Step 3: Cross multiply
    117,903,977.20x = 176,688,004.20 × 86,957,052.40
  4. Step 4: Simplify right side
    117,903,977.20x = 15,364,268,039,670,820
  5. Step 5: Solve for x
    x = 15,364,268,039,670,820/117,903,977.20
  6. Step 6: Final answer
    x = 130,311,702.83

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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.