Home / 115,313.04-159,142.95-72,299.34

Finding the Fourth Proportional to 115,313.04, 159,142.95 and 72,299.34

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Solution

The fourth proportional to 115,313.04, 159,142.95 and 72,299.34 is: 99,779.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,313.04 : 159,142.95 = 72,299.34 : x
  2. Step 2: Convert to fraction form
    115,313.04/159,142.95 = 72,299.34/x
  3. Step 3: Cross multiply
    115,313.04x = 159,142.95 × 72,299.34
  4. Step 4: Simplify right side
    115,313.04x = 11,505,930,250.65
  5. Step 5: Solve for x
    x = 11,505,930,250.65/115,313.04
  6. Step 6: Final answer
    x = 99,779.96

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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.