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Finding the Fourth Proportional to 137,955.45, 190,373.06 and 84,330.21

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Solution

The fourth proportional to 137,955.45, 190,373.06 and 84,330.21 is: 116,372.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,955.45 : 190,373.06 = 84,330.21 : x
  2. Step 2: Convert to fraction form
    137,955.45/190,373.06 = 84,330.21/x
  3. Step 3: Cross multiply
    137,955.45x = 190,373.06 × 84,330.21
  4. Step 4: Simplify right side
    137,955.45x = 16,054,199,706.49
  5. Step 5: Solve for x
    x = 16,054,199,706.49/137,955.45
  6. Step 6: Final answer
    x = 116,372.35

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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.