Home / 143,878.12-198,547.87-83,444.89

Finding the Fourth Proportional to 143,878.12, 198,547.87 and 83,444.89

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Solution

The fourth proportional to 143,878.12, 198,547.87 and 83,444.89 is: 115,151.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,878.12 : 198,547.87 = 83,444.89 : x
  2. Step 2: Convert to fraction form
    143,878.12/198,547.87 = 83,444.89/x
  3. Step 3: Cross multiply
    143,878.12x = 198,547.87 × 83,444.89
  4. Step 4: Simplify right side
    143,878.12x = 16,567,805,171.88
  5. Step 5: Solve for x
    x = 16,567,805,171.88/143,878.12
  6. Step 6: Final answer
    x = 115,151.67

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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.