Home / 103,621.50-143,002.92-61,179.12

Finding the Fourth Proportional to 103,621.50, 143,002.92 and 61,179.12

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Solution

The fourth proportional to 103,621.50, 143,002.92 and 61,179.12 is: 84,430.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.50 : 143,002.92 = 61,179.12 : x
  2. Step 2: Convert to fraction form
    103,621.50/143,002.92 = 61,179.12/x
  3. Step 3: Cross multiply
    103,621.50x = 143,002.92 × 61,179.12
  4. Step 4: Simplify right side
    103,621.50x = 8,748,792,803.03
  5. Step 5: Solve for x
    x = 8,748,792,803.03/103,621.50
  6. Step 6: Final answer
    x = 84,430.29

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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.