Home / 100,927.86-139,284.21-56,218.74

Finding the Fourth Proportional to 100,927.86, 139,284.21 and 56,218.74

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Solution

The fourth proportional to 100,927.86, 139,284.21 and 56,218.74 is: 77,583.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,927.86 : 139,284.21 = 56,218.74 : x
  2. Step 2: Convert to fraction form
    100,927.86/139,284.21 = 56,218.74/x
  3. Step 3: Cross multiply
    100,927.86x = 139,284.21 × 56,218.74
  4. Step 4: Simplify right side
    100,927.86x = 7,830,382,788.10
  5. Step 5: Solve for x
    x = 7,830,382,788.10/100,927.86
  6. Step 6: Final answer
    x = 77,583.96

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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.