Home / 105,816.36-158,641.32-72,435.24

Finding the Fourth Proportional to 105,816.36, 158,641.32 and 72,435.24

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Solution

The fourth proportional to 105,816.36, 158,641.32 and 72,435.24 is: 108,595.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,816.36 : 158,641.32 = 72,435.24 : x
  2. Step 2: Convert to fraction form
    105,816.36/158,641.32 = 72,435.24/x
  3. Step 3: Cross multiply
    105,816.36x = 158,641.32 × 72,435.24
  4. Step 4: Simplify right side
    105,816.36x = 11,491,222,088.12
  5. Step 5: Solve for x
    x = 11,491,222,088.12/105,816.36
  6. Step 6: Final answer
    x = 108,595.89

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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.