Home / 129,364,809.60-194,047,214.40-78,346,473.60

Finding the Fourth Proportional to 129,364,809.60, 194,047,214.40 and 78,346,473.60

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Solution

The fourth proportional to 129,364,809.60, 194,047,214.40 and 78,346,473.60 is: 117,519,710.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,364,809.60 : 194,047,214.40 = 78,346,473.60 : x
  2. Step 2: Convert to fraction form
    129,364,809.60/194,047,214.40 = 78,346,473.60/x
  3. Step 3: Cross multiply
    129,364,809.60x = 194,047,214.40 × 78,346,473.60
  4. Step 4: Simplify right side
    129,364,809.60x = 15,202,914,960,143,140
  5. Step 5: Solve for x
    x = 15,202,914,960,143,140/129,364,809.60
  6. Step 6: Final answer
    x = 117,519,710.40

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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.