Home / 142,128.09-213,113.79-57,866.67

Finding the Fourth Proportional to 142,128.09, 213,113.79 and 57,866.67

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Solution

The fourth proportional to 142,128.09, 213,113.79 and 57,866.67 is: 86,768.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,128.09 : 213,113.79 = 57,866.67 : x
  2. Step 2: Convert to fraction form
    142,128.09/213,113.79 = 57,866.67/x
  3. Step 3: Cross multiply
    142,128.09x = 213,113.79 × 57,866.67
  4. Step 4: Simplify right side
    142,128.09x = 12,332,185,358.38
  5. Step 5: Solve for x
    x = 12,332,185,358.38/142,128.09
  6. Step 6: Final answer
    x = 86,768.11

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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.