Home / 103,511.04-142,840.32-58,798.08

Finding the Fourth Proportional to 103,511.04, 142,840.32 and 58,798.08

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Solution

The fourth proportional to 103,511.04, 142,840.32 and 58,798.08 is: 81,138.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,511.04 : 142,840.32 = 58,798.08 : x
  2. Step 2: Convert to fraction form
    103,511.04/142,840.32 = 58,798.08/x
  3. Step 3: Cross multiply
    103,511.04x = 142,840.32 × 58,798.08
  4. Step 4: Simplify right side
    103,511.04x = 8,398,736,562.59
  5. Step 5: Solve for x
    x = 8,398,736,562.59/103,511.04
  6. Step 6: Final answer
    x = 81,138.56

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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.