Home / 124,443.19-171,746.40-78,569.47

Finding the Fourth Proportional to 124,443.19, 171,746.40 and 78,569.47

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Solution

The fourth proportional to 124,443.19, 171,746.40 and 78,569.47 is: 108,435.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,443.19 : 171,746.40 = 78,569.47 : x
  2. Step 2: Convert to fraction form
    124,443.19/171,746.40 = 78,569.47/x
  3. Step 3: Cross multiply
    124,443.19x = 171,746.40 × 78,569.47
  4. Step 4: Simplify right side
    124,443.19x = 13,494,023,622.41
  5. Step 5: Solve for x
    x = 13,494,023,622.41/124,443.19
  6. Step 6: Final answer
    x = 108,435.21

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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.