Home / 89,820,068.70-134,730,103.05-80,750,142.30

Finding the Fourth Proportional to 89,820,068.70, 134,730,103.05 and 80,750,142.30

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Solution

The fourth proportional to 89,820,068.70, 134,730,103.05 and 80,750,142.30 is: 121,125,213.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,820,068.70 : 134,730,103.05 = 80,750,142.30 : x
  2. Step 2: Convert to fraction form
    89,820,068.70/134,730,103.05 = 80,750,142.30/x
  3. Step 3: Cross multiply
    89,820,068.70x = 134,730,103.05 × 80,750,142.30
  4. Step 4: Simplify right side
    89,820,068.70x = 10,879,474,993,381,164
  5. Step 5: Solve for x
    x = 10,879,474,993,381,164/89,820,068.70
  6. Step 6: Final answer
    x = 121,125,213.45

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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.