Home / 108,991.57-163,518.63-45,779.19

Finding the Fourth Proportional to 108,991.57, 163,518.63 and 45,779.19

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Solution

The fourth proportional to 108,991.57, 163,518.63 and 45,779.19 is: 68,681.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,991.57 : 163,518.63 = 45,779.19 : x
  2. Step 2: Convert to fraction form
    108,991.57/163,518.63 = 45,779.19/x
  3. Step 3: Cross multiply
    108,991.57x = 163,518.63 × 45,779.19
  4. Step 4: Simplify right side
    108,991.57x = 7,485,749,384.82
  5. Step 5: Solve for x
    x = 7,485,749,384.82/108,991.57
  6. Step 6: Final answer
    x = 68,681.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.