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Finding the Fourth Proportional to 122,088, 168,483.67 and 73,689.99

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Solution

The fourth proportional to 122,088, 168,483.67 and 73,689.99 is: 101,693.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,088 : 168,483.67 = 73,689.99 : x
  2. Step 2: Convert to fraction form
    122,088/168,483.67 = 73,689.99/x
  3. Step 3: Cross multiply
    122,088x = 168,483.67 × 73,689.99
  4. Step 4: Simplify right side
    122,088x = 12,415,559,957.46
  5. Step 5: Solve for x
    x = 12,415,559,957.46/122,088
  6. Step 6: Final answer
    x = 101,693.53

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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.