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Finding the Fourth Proportional to 117,638.80, 176,393.40 and 38,712.40

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Solution

The fourth proportional to 117,638.80, 176,393.40 and 38,712.40 is: 58,047.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,638.80 : 176,393.40 = 38,712.40 : x
  2. Step 2: Convert to fraction form
    117,638.80/176,393.40 = 38,712.40/x
  3. Step 3: Cross multiply
    117,638.80x = 176,393.40 × 38,712.40
  4. Step 4: Simplify right side
    117,638.80x = 6,828,611,858.16
  5. Step 5: Solve for x
    x = 6,828,611,858.16/117,638.80
  6. Step 6: Final answer
    x = 58,047.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.