Home / 143,938.65-198,645.06-83,509.31

Finding the Fourth Proportional to 143,938.65, 198,645.06 and 83,509.31

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Solution

The fourth proportional to 143,938.65, 198,645.06 and 83,509.31 is: 115,248.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,938.65 : 198,645.06 = 83,509.31 : x
  2. Step 2: Convert to fraction form
    143,938.65/198,645.06 = 83,509.31/x
  3. Step 3: Cross multiply
    143,938.65x = 198,645.06 × 83,509.31
  4. Step 4: Simplify right side
    143,938.65x = 16,588,710,484.74
  5. Step 5: Solve for x
    x = 16,588,710,484.74/143,938.65
  6. Step 6: Final answer
    x = 115,248.48

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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.