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Finding the Fourth Proportional to 158,782.80, 238,211 and 70,061.52

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Solution

The fourth proportional to 158,782.80, 238,211 and 70,061.52 is: 105,108.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,782.80 : 238,211 = 70,061.52 : x
  2. Step 2: Convert to fraction form
    158,782.80/238,211 = 70,061.52/x
  3. Step 3: Cross multiply
    158,782.80x = 238,211 × 70,061.52
  4. Step 4: Simplify right side
    158,782.80x = 16,689,424,740.72
  5. Step 5: Solve for x
    x = 16,689,424,740.72/158,782.80
  6. Step 6: Final answer
    x = 105,108.52

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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.