Home / 213,510.36-320,015.40-87,071.76

Finding the Fourth Proportional to 213,510.36, 320,015.40 and 87,071.76

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Solution

The fourth proportional to 213,510.36, 320,015.40 and 87,071.76 is: 130,505.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,510.36 : 320,015.40 = 87,071.76 : x
  2. Step 2: Convert to fraction form
    213,510.36/320,015.40 = 87,071.76/x
  3. Step 3: Cross multiply
    213,510.36x = 320,015.40 × 87,071.76
  4. Step 4: Simplify right side
    213,510.36x = 27,864,304,105.10
  5. Step 5: Solve for x
    x = 27,864,304,105.10/213,510.36
  6. Step 6: Final answer
    x = 130,505.63

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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.