Home / 103,836.90-143,289.09-61,409.10

Finding the Fourth Proportional to 103,836.90, 143,289.09 and 61,409.10

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Solution

The fourth proportional to 103,836.90, 143,289.09 and 61,409.10 is: 84,741.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,836.90 : 143,289.09 = 61,409.10 : x
  2. Step 2: Convert to fraction form
    103,836.90/143,289.09 = 61,409.10/x
  3. Step 3: Cross multiply
    103,836.90x = 143,289.09 × 61,409.10
  4. Step 4: Simplify right side
    103,836.90x = 8,799,254,056.72
  5. Step 5: Solve for x
    x = 8,799,254,056.72/103,836.90
  6. Step 6: Final answer
    x = 84,741.11

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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.