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Finding the Fourth Proportional to 155,988.81, 215,276.81 and 92,361.69

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Solution

The fourth proportional to 155,988.81, 215,276.81 and 92,361.69 is: 127,466.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,988.81 : 215,276.81 = 92,361.69 : x
  2. Step 2: Convert to fraction form
    155,988.81/215,276.81 = 92,361.69/x
  3. Step 3: Cross multiply
    155,988.81x = 215,276.81 × 92,361.69
  4. Step 4: Simplify right side
    155,988.81x = 19,883,329,527.60
  5. Step 5: Solve for x
    x = 19,883,329,527.60/155,988.81
  6. Step 6: Final answer
    x = 127,466.38

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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.