Home / 142,212.48-213,435.32-72,111.84

Finding the Fourth Proportional to 142,212.48, 213,435.32 and 72,111.84

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Solution

The fourth proportional to 142,212.48, 213,435.32 and 72,111.84 is: 108,226.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,212.48 : 213,435.32 = 72,111.84 : x
  2. Step 2: Convert to fraction form
    142,212.48/213,435.32 = 72,111.84/x
  3. Step 3: Cross multiply
    142,212.48x = 213,435.32 × 72,111.84
  4. Step 4: Simplify right side
    142,212.48x = 15,391,213,646.19
  5. Step 5: Solve for x
    x = 15,391,213,646.19/142,212.48
  6. Step 6: Final answer
    x = 108,226.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.