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Finding the Fourth Proportional to 121,152, 167,176.32 and 67,424.64

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Solution

The fourth proportional to 121,152, 167,176.32 and 67,424.64 is: 93,038.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,152 : 167,176.32 = 67,424.64 : x
  2. Step 2: Convert to fraction form
    121,152/167,176.32 = 67,424.64/x
  3. Step 3: Cross multiply
    121,152x = 167,176.32 × 67,424.64
  4. Step 4: Simplify right side
    121,152x = 11,271,803,192.52
  5. Step 5: Solve for x
    x = 11,271,803,192.52/121,152
  6. Step 6: Final answer
    x = 93,038.52

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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.