Home / 190,187.12-262,473-105,312.08

Finding the Fourth Proportional to 190,187.12, 262,473 and 105,312.08

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Solution

The fourth proportional to 190,187.12, 262,473 and 105,312.08 is: 145,338.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,187.12 : 262,473 = 105,312.08 : x
  2. Step 2: Convert to fraction form
    190,187.12/262,473 = 105,312.08/x
  3. Step 3: Cross multiply
    190,187.12x = 262,473 × 105,312.08
  4. Step 4: Simplify right side
    190,187.12x = 27,641,577,573.84
  5. Step 5: Solve for x
    x = 27,641,577,573.84/190,187.12
  6. Step 6: Final answer
    x = 145,338.85

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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.