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Finding the Fourth Proportional to 129,804.86, 179,211.80 and 99,532.02

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Solution

The fourth proportional to 129,804.86, 179,211.80 and 99,532.02 is: 137,416.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,804.86 : 179,211.80 = 99,532.02 : x
  2. Step 2: Convert to fraction form
    129,804.86/179,211.80 = 99,532.02/x
  3. Step 3: Cross multiply
    129,804.86x = 179,211.80 × 99,532.02
  4. Step 4: Simplify right side
    129,804.86x = 17,837,312,461.84
  5. Step 5: Solve for x
    x = 17,837,312,461.84/129,804.86
  6. Step 6: Final answer
    x = 137,416.37

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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.