Home / 143,415.36-197,873.19-86,018.76

Finding the Fourth Proportional to 143,415.36, 197,873.19 and 86,018.76

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Solution

The fourth proportional to 143,415.36, 197,873.19 and 86,018.76 is: 118,681.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,415.36 : 197,873.19 = 86,018.76 : x
  2. Step 2: Convert to fraction form
    143,415.36/197,873.19 = 86,018.76/x
  3. Step 3: Cross multiply
    143,415.36x = 197,873.19 × 86,018.76
  4. Step 4: Simplify right side
    143,415.36x = 17,020,806,441.04
  5. Step 5: Solve for x
    x = 17,020,806,441.04/143,415.36
  6. Step 6: Final answer
    x = 118,681.89

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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.