Home / 129,492,140.80-194,238,211.20-128,736,313.60

Finding the Fourth Proportional to 129,492,140.80, 194,238,211.20 and 128,736,313.60

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Solution

The fourth proportional to 129,492,140.80, 194,238,211.20 and 128,736,313.60 is: 193,104,470.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,492,140.80 : 194,238,211.20 = 128,736,313.60 : x
  2. Step 2: Convert to fraction form
    129,492,140.80/194,238,211.20 = 128,736,313.60/x
  3. Step 3: Cross multiply
    129,492,140.80x = 194,238,211.20 × 128,736,313.60
  4. Step 4: Simplify right side
    129,492,140.80x = 25,005,511,270,146,228
  5. Step 5: Solve for x
    x = 25,005,511,270,146,228/129,492,140.80
  6. Step 6: Final answer
    x = 193,104,470.40

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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.