Home / 100,928.07-139,280.73-56,216.07

Finding the Fourth Proportional to 100,928.07, 139,280.73 and 56,216.07

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Solution

The fourth proportional to 100,928.07, 139,280.73 and 56,216.07 is: 77,578.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,928.07 : 139,280.73 = 56,216.07 : x
  2. Step 2: Convert to fraction form
    100,928.07/139,280.73 = 56,216.07/x
  3. Step 3: Cross multiply
    100,928.07x = 139,280.73 × 56,216.07
  4. Step 4: Simplify right side
    100,928.07x = 7,829,814,570.93
  5. Step 5: Solve for x
    x = 7,829,814,570.93/100,928.07
  6. Step 6: Final answer
    x = 77,578.17

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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.