Home / 116,011.25-160,172.75-89,105.75

Finding the Fourth Proportional to 116,011.25, 160,172.75 and 89,105.75

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Solution

The fourth proportional to 116,011.25, 160,172.75 and 89,105.75 is: 123,025.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,011.25 : 160,172.75 = 89,105.75 : x
  2. Step 2: Convert to fraction form
    116,011.25/160,172.75 = 89,105.75/x
  3. Step 3: Cross multiply
    116,011.25x = 160,172.75 × 89,105.75
  4. Step 4: Simplify right side
    116,011.25x = 14,272,312,572.78
  5. Step 5: Solve for x
    x = 14,272,312,572.78/116,011.25
  6. Step 6: Final answer
    x = 123,025.25

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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.