Home / 103,219.53-142,390.44-67,430.49

Finding the Fourth Proportional to 103,219.53, 142,390.44 and 67,430.49

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Solution

The fourth proportional to 103,219.53, 142,390.44 and 67,430.49 is: 93,019.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,219.53 : 142,390.44 = 67,430.49 : x
  2. Step 2: Convert to fraction form
    103,219.53/142,390.44 = 67,430.49/x
  3. Step 3: Cross multiply
    103,219.53x = 142,390.44 × 67,430.49
  4. Step 4: Simplify right side
    103,219.53x = 9,601,457,140.52
  5. Step 5: Solve for x
    x = 9,601,457,140.52/103,219.53
  6. Step 6: Final answer
    x = 93,019.77

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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.