Home / 103,509.90-142,858.79-58,191.62

Finding the Fourth Proportional to 103,509.90, 142,858.79 and 58,191.62

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Solution

The fourth proportional to 103,509.90, 142,858.79 and 58,191.62 is: 80,312.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,509.90 : 142,858.79 = 58,191.62 : x
  2. Step 2: Convert to fraction form
    103,509.90/142,858.79 = 58,191.62/x
  3. Step 3: Cross multiply
    103,509.90x = 142,858.79 × 58,191.62
  4. Step 4: Simplify right side
    103,509.90x = 8,313,183,634.31
  5. Step 5: Solve for x
    x = 8,313,183,634.31/103,509.90
  6. Step 6: Final answer
    x = 80,312.93

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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.