Home / 103,555.04-142,768.32-67,683.38

Finding the Fourth Proportional to 103,555.04, 142,768.32 and 67,683.38

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Solution

The fourth proportional to 103,555.04, 142,768.32 and 67,683.38 is: 93,313.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,555.04 : 142,768.32 = 67,683.38 : x
  2. Step 2: Convert to fraction form
    103,555.04/142,768.32 = 67,683.38/x
  3. Step 3: Cross multiply
    103,555.04x = 142,768.32 × 67,683.38
  4. Step 4: Simplify right side
    103,555.04x = 9,663,042,454.52
  5. Step 5: Solve for x
    x = 9,663,042,454.52/103,555.04
  6. Step 6: Final answer
    x = 93,313.11

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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.