Home / 103,454.21-142,779.99-63,159.35

Finding the Fourth Proportional to 103,454.21, 142,779.99 and 63,159.35

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Solution

The fourth proportional to 103,454.21, 142,779.99 and 63,159.35 is: 87,167.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,454.21 : 142,779.99 = 63,159.35 : x
  2. Step 2: Convert to fraction form
    103,454.21/142,779.99 = 63,159.35/x
  3. Step 3: Cross multiply
    103,454.21x = 142,779.99 × 63,159.35
  4. Step 4: Simplify right side
    103,454.21x = 9,017,890,647.51
  5. Step 5: Solve for x
    x = 9,017,890,647.51/103,454.21
  6. Step 6: Final answer
    x = 87,167.95

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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.