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Finding the Fourth Proportional to 99,722.75, 149,457.76 and 98,668.13

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Solution

The fourth proportional to 99,722.75, 149,457.76 and 98,668.13 is: 147,877.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,722.75 : 149,457.76 = 98,668.13 : x
  2. Step 2: Convert to fraction form
    99,722.75/149,457.76 = 98,668.13/x
  3. Step 3: Cross multiply
    99,722.75x = 149,457.76 × 98,668.13
  4. Step 4: Simplify right side
    99,722.75x = 14,746,716,699.23
  5. Step 5: Solve for x
    x = 14,746,716,699.23/99,722.75
  6. Step 6: Final answer
    x = 147,877.16

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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.