Home / 190,421.34-262,781.67-105,538.47

Finding the Fourth Proportional to 190,421.34, 262,781.67 and 105,538.47

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Solution

The fourth proportional to 190,421.34, 262,781.67 and 105,538.47 is: 145,643.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,421.34 : 262,781.67 = 105,538.47 : x
  2. Step 2: Convert to fraction form
    190,421.34/262,781.67 = 105,538.47/x
  3. Step 3: Cross multiply
    190,421.34x = 262,781.67 × 105,538.47
  4. Step 4: Simplify right side
    190,421.34x = 27,733,575,395.84
  5. Step 5: Solve for x
    x = 27,733,575,395.84/190,421.34
  6. Step 6: Final answer
    x = 145,643.21

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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.