Home / 89,144,879.20-133,717,318.80-81,492,128.80

Finding the Fourth Proportional to 89,144,879.20, 133,717,318.80 and 81,492,128.80

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Solution

The fourth proportional to 89,144,879.20, 133,717,318.80 and 81,492,128.80 is: 122,238,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,144,879.20 : 133,717,318.80 = 81,492,128.80 : x
  2. Step 2: Convert to fraction form
    89,144,879.20/133,717,318.80 = 81,492,128.80/x
  3. Step 3: Cross multiply
    89,144,879.20x = 133,717,318.80 × 81,492,128.80
  4. Step 4: Simplify right side
    89,144,879.20x = 10,896,908,966,440,260
  5. Step 5: Solve for x
    x = 10,896,908,966,440,260/89,144,879.20
  6. Step 6: Final answer
    x = 122,238,193.20

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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.