Home / 216,696.36-299,014.02-121,187.64

Finding the Fourth Proportional to 216,696.36, 299,014.02 and 121,187.64

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Solution

The fourth proportional to 216,696.36, 299,014.02 and 121,187.64 is: 167,223.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,696.36 : 299,014.02 = 121,187.64 : x
  2. Step 2: Convert to fraction form
    216,696.36/299,014.02 = 121,187.64/x
  3. Step 3: Cross multiply
    216,696.36x = 299,014.02 × 121,187.64
  4. Step 4: Simplify right side
    216,696.36x = 36,236,803,410.71
  5. Step 5: Solve for x
    x = 36,236,803,410.71/216,696.36
  6. Step 6: Final answer
    x = 167,223.87

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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.