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Finding the Fourth Proportional to 117,660.89, 162,312.23 and 76,848.93

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Solution

The fourth proportional to 117,660.89, 162,312.23 and 76,848.93 is: 106,012.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,660.89 : 162,312.23 = 76,848.93 : x
  2. Step 2: Convert to fraction form
    117,660.89/162,312.23 = 76,848.93/x
  3. Step 3: Cross multiply
    117,660.89x = 162,312.23 × 76,848.93
  4. Step 4: Simplify right side
    117,660.89x = 12,473,521,393.54
  5. Step 5: Solve for x
    x = 12,473,521,393.54/117,660.89
  6. Step 6: Final answer
    x = 106,012.47

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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.