Home / 106,981.63-147,639.72-64,539.25

Finding the Fourth Proportional to 106,981.63, 147,639.72 and 64,539.25

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Solution

The fourth proportional to 106,981.63, 147,639.72 and 64,539.25 is: 89,067.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,981.63 : 147,639.72 = 64,539.25 : x
  2. Step 2: Convert to fraction form
    106,981.63/147,639.72 = 64,539.25/x
  3. Step 3: Cross multiply
    106,981.63x = 147,639.72 × 64,539.25
  4. Step 4: Simplify right side
    106,981.63x = 9,528,556,799.01
  5. Step 5: Solve for x
    x = 9,528,556,799.01/106,981.63
  6. Step 6: Final answer
    x = 89,067.22

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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.