Home / 112,539.58-155,287.37-64,783.70

Finding the Fourth Proportional to 112,539.58, 155,287.37 and 64,783.70

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Solution

The fourth proportional to 112,539.58, 155,287.37 and 64,783.70 is: 89,391.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,539.58 : 155,287.37 = 64,783.70 : x
  2. Step 2: Convert to fraction form
    112,539.58/155,287.37 = 64,783.70/x
  3. Step 3: Cross multiply
    112,539.58x = 155,287.37 × 64,783.70
  4. Step 4: Simplify right side
    112,539.58x = 10,060,090,391.87
  5. Step 5: Solve for x
    x = 10,060,090,391.87/112,539.58
  6. Step 6: Final answer
    x = 89,391.58

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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.