Home / 112,722.78-155,557.44-62,421.78

Finding the Fourth Proportional to 112,722.78, 155,557.44 and 62,421.78

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Solution

The fourth proportional to 112,722.78, 155,557.44 and 62,421.78 is: 86,142.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,722.78 : 155,557.44 = 62,421.78 : x
  2. Step 2: Convert to fraction form
    112,722.78/155,557.44 = 62,421.78/x
  3. Step 3: Cross multiply
    112,722.78x = 155,557.44 × 62,421.78
  4. Step 4: Simplify right side
    112,722.78x = 9,710,172,297.04
  5. Step 5: Solve for x
    x = 9,710,172,297.04/112,722.78
  6. Step 6: Final answer
    x = 86,142.06

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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.