Home / 133,109.16-183,689.76-72,679.80

Finding the Fourth Proportional to 133,109.16, 183,689.76 and 72,679.80

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Solution

The fourth proportional to 133,109.16, 183,689.76 and 72,679.80 is: 100,297.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,109.16 : 183,689.76 = 72,679.80 : x
  2. Step 2: Convert to fraction form
    133,109.16/183,689.76 = 72,679.80/x
  3. Step 3: Cross multiply
    133,109.16x = 183,689.76 × 72,679.80
  4. Step 4: Simplify right side
    133,109.16x = 13,350,535,018.85
  5. Step 5: Solve for x
    x = 13,350,535,018.85/133,109.16
  6. Step 6: Final answer
    x = 100,297.64

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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.