Home / 103,829.04-143,285.41-61,387.20

Finding the Fourth Proportional to 103,829.04, 143,285.41 and 61,387.20

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Solution

The fourth proportional to 103,829.04, 143,285.41 and 61,387.20 is: 84,715.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,829.04 : 143,285.41 = 61,387.20 : x
  2. Step 2: Convert to fraction form
    103,829.04/143,285.41 = 61,387.20/x
  3. Step 3: Cross multiply
    103,829.04x = 143,285.41 × 61,387.20
  4. Step 4: Simplify right side
    103,829.04x = 8,795,890,120.75
  5. Step 5: Solve for x
    x = 8,795,890,120.75/103,829.04
  6. Step 6: Final answer
    x = 84,715.13

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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.