Home / 104,875.08-144,729.32-57,128.48

Finding the Fourth Proportional to 104,875.08, 144,729.32 and 57,128.48

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Solution

The fourth proportional to 104,875.08, 144,729.32 and 57,128.48 is: 78,838.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,875.08 : 144,729.32 = 57,128.48 : x
  2. Step 2: Convert to fraction form
    104,875.08/144,729.32 = 57,128.48/x
  3. Step 3: Cross multiply
    104,875.08x = 144,729.32 × 57,128.48
  4. Step 4: Simplify right side
    104,875.08x = 8,268,166,063.03
  5. Step 5: Solve for x
    x = 8,268,166,063.03/104,875.08
  6. Step 6: Final answer
    x = 78,838.23

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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.