Home / 106,728.03-147,315.69-61,438.01

Finding the Fourth Proportional to 106,728.03, 147,315.69 and 61,438.01

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Solution

The fourth proportional to 106,728.03, 147,315.69 and 61,438.01 is: 84,802.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,728.03 : 147,315.69 = 61,438.01 : x
  2. Step 2: Convert to fraction form
    106,728.03/147,315.69 = 61,438.01/x
  3. Step 3: Cross multiply
    106,728.03x = 147,315.69 × 61,438.01
  4. Step 4: Simplify right side
    106,728.03x = 9,050,782,098.80
  5. Step 5: Solve for x
    x = 9,050,782,098.80/106,728.03
  6. Step 6: Final answer
    x = 84,802.30

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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.