Home / 105,620.90-145,756.41-57,877.22

Finding the Fourth Proportional to 105,620.90, 145,756.41 and 57,877.22

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Solution

The fourth proportional to 105,620.90, 145,756.41 and 57,877.22 is: 79,870.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,620.90 : 145,756.41 = 57,877.22 : x
  2. Step 2: Convert to fraction form
    105,620.90/145,756.41 = 57,877.22/x
  3. Step 3: Cross multiply
    105,620.90x = 145,756.41 × 57,877.22
  4. Step 4: Simplify right side
    105,620.90x = 8,435,975,807.98
  5. Step 5: Solve for x
    x = 8,435,975,807.98/105,620.90
  6. Step 6: Final answer
    x = 79,870.33

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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.