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Finding the Fourth Proportional to 104,312.49, 143,931.99 and 61,299

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Solution

The fourth proportional to 104,312.49, 143,931.99 and 61,299 is: 84,581.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,312.49 : 143,931.99 = 61,299 : x
  2. Step 2: Convert to fraction form
    104,312.49/143,931.99 = 61,299/x
  3. Step 3: Cross multiply
    104,312.49x = 143,931.99 × 61,299
  4. Step 4: Simplify right side
    104,312.49x = 8,822,887,055.01
  5. Step 5: Solve for x
    x = 8,822,887,055.01/104,312.49
  6. Step 6: Final answer
    x = 84,581.31

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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.