Home / 112,681.37-155,605.64-72,464.96

Finding the Fourth Proportional to 112,681.37, 155,605.64 and 72,464.96

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Solution

The fourth proportional to 112,681.37, 155,605.64 and 72,464.96 is: 100,069.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,681.37 : 155,605.64 = 72,464.96 : x
  2. Step 2: Convert to fraction form
    112,681.37/155,605.64 = 72,464.96/x
  3. Step 3: Cross multiply
    112,681.37x = 155,605.64 × 72,464.96
  4. Step 4: Simplify right side
    112,681.37x = 11,275,956,478.37
  5. Step 5: Solve for x
    x = 11,275,956,478.37/112,681.37
  6. Step 6: Final answer
    x = 100,069.39

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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.