Home / 116,391.09-160,478.81-90,557.15

Finding the Fourth Proportional to 116,391.09, 160,478.81 and 90,557.15

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Solution

The fourth proportional to 116,391.09, 160,478.81 and 90,557.15 is: 124,859.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,391.09 : 160,478.81 = 90,557.15 : x
  2. Step 2: Convert to fraction form
    116,391.09/160,478.81 = 90,557.15/x
  3. Step 3: Cross multiply
    116,391.09x = 160,478.81 × 90,557.15
  4. Step 4: Simplify right side
    116,391.09x = 14,532,503,668.99
  5. Step 5: Solve for x
    x = 14,532,503,668.99/116,391.09
  6. Step 6: Final answer
    x = 124,859.25

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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.