Home / 131,088.73-180,917.81-74,508.61

Finding the Fourth Proportional to 131,088.73, 180,917.81 and 74,508.61

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Solution

The fourth proportional to 131,088.73, 180,917.81 and 74,508.61 is: 102,830.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,088.73 : 180,917.81 = 74,508.61 : x
  2. Step 2: Convert to fraction form
    131,088.73/180,917.81 = 74,508.61/x
  3. Step 3: Cross multiply
    131,088.73x = 180,917.81 × 74,508.61
  4. Step 4: Simplify right side
    131,088.73x = 13,479,934,547.34
  5. Step 5: Solve for x
    x = 13,479,934,547.34/131,088.73
  6. Step 6: Final answer
    x = 102,830.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.