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Finding the Fourth Proportional to 173,130, 238,919.40 and 93,642

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Solution

The fourth proportional to 173,130, 238,919.40 and 93,642 is: 129,225.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,130 : 238,919.40 = 93,642 : x
  2. Step 2: Convert to fraction form
    173,130/238,919.40 = 93,642/x
  3. Step 3: Cross multiply
    173,130x = 238,919.40 × 93,642
  4. Step 4: Simplify right side
    173,130x = 22,372,890,454.80
  5. Step 5: Solve for x
    x = 22,372,890,454.80/173,130
  6. Step 6: Final answer
    x = 129,225.96

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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.