Home / 108,782.79-163,293.52-86,437.12

Finding the Fourth Proportional to 108,782.79, 163,293.52 and 86,437.12

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Solution

The fourth proportional to 108,782.79, 163,293.52 and 86,437.12 is: 129,750.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,782.79 : 163,293.52 = 86,437.12 : x
  2. Step 2: Convert to fraction form
    108,782.79/163,293.52 = 86,437.12/x
  3. Step 3: Cross multiply
    108,782.79x = 163,293.52 × 86,437.12
  4. Step 4: Simplify right side
    108,782.79x = 14,114,620,334.81
  5. Step 5: Solve for x
    x = 14,114,620,334.81/108,782.79
  6. Step 6: Final answer
    x = 129,750.49

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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.