Home / 105,671.04-145,830.56-63,221.37

Finding the Fourth Proportional to 105,671.04, 145,830.56 and 63,221.37

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Solution

The fourth proportional to 105,671.04, 145,830.56 and 63,221.37 is: 87,248.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,671.04 : 145,830.56 = 63,221.37 : x
  2. Step 2: Convert to fraction form
    105,671.04/145,830.56 = 63,221.37/x
  3. Step 3: Cross multiply
    105,671.04x = 145,830.56 × 63,221.37
  4. Step 4: Simplify right side
    105,671.04x = 9,219,607,474.96
  5. Step 5: Solve for x
    x = 9,219,607,474.96/105,671.04
  6. Step 6: Final answer
    x = 87,248.19

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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.