Home / 115,140.02-172,636.25-79,501.50

Finding the Fourth Proportional to 115,140.02, 172,636.25 and 79,501.50

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Solution

The fourth proportional to 115,140.02, 172,636.25 and 79,501.50 is: 119,201.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,140.02 : 172,636.25 = 79,501.50 : x
  2. Step 2: Convert to fraction form
    115,140.02/172,636.25 = 79,501.50/x
  3. Step 3: Cross multiply
    115,140.02x = 172,636.25 × 79,501.50
  4. Step 4: Simplify right side
    115,140.02x = 13,724,840,431.87
  5. Step 5: Solve for x
    x = 13,724,840,431.87/115,140.02
  6. Step 6: Final answer
    x = 119,201.31

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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.