Home / 105,538.88-145,636.98-57,792.80

Finding the Fourth Proportional to 105,538.88, 145,636.98 and 57,792.80

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Solution

The fourth proportional to 105,538.88, 145,636.98 and 57,792.80 is: 79,750.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,538.88 : 145,636.98 = 57,792.80 : x
  2. Step 2: Convert to fraction form
    105,538.88/145,636.98 = 57,792.80/x
  3. Step 3: Cross multiply
    105,538.88x = 145,636.98 × 57,792.80
  4. Step 4: Simplify right side
    105,538.88x = 8,416,768,857.74
  5. Step 5: Solve for x
    x = 8,416,768,857.74/105,538.88
  6. Step 6: Final answer
    x = 79,750.41

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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.