Home / 103,705.65-143,076.38-67,916.07

Finding the Fourth Proportional to 103,705.65, 143,076.38 and 67,916.07

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Solution

The fourth proportional to 103,705.65, 143,076.38 and 67,916.07 is: 93,699.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,705.65 : 143,076.38 = 67,916.07 : x
  2. Step 2: Convert to fraction form
    103,705.65/143,076.38 = 67,916.07/x
  3. Step 3: Cross multiply
    103,705.65x = 143,076.38 × 67,916.07
  4. Step 4: Simplify right side
    103,705.65x = 9,717,185,099.85
  5. Step 5: Solve for x
    x = 9,717,185,099.85/103,705.65
  6. Step 6: Final answer
    x = 93,699.67

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1.5x scale

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.