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Finding the Fourth Proportional to 190,412.79, 262,768 and 104,376.55

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Solution

The fourth proportional to 190,412.79, 262,768 and 104,376.55 is: 144,038.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,412.79 : 262,768 = 104,376.55 : x
  2. Step 2: Convert to fraction form
    190,412.79/262,768 = 104,376.55/x
  3. Step 3: Cross multiply
    190,412.79x = 262,768 × 104,376.55
  4. Step 4: Simplify right side
    190,412.79x = 27,426,817,290.40
  5. Step 5: Solve for x
    x = 27,426,817,290.40/190,412.79
  6. Step 6: Final answer
    x = 144,038.73

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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.