Home / 115,281.12-159,148.08-81,827.04

Finding the Fourth Proportional to 115,281.12, 159,148.08 and 81,827.04

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Solution

The fourth proportional to 115,281.12, 159,148.08 and 81,827.04 is: 112,964.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,281.12 : 159,148.08 = 81,827.04 : x
  2. Step 2: Convert to fraction form
    115,281.12/159,148.08 = 81,827.04/x
  3. Step 3: Cross multiply
    115,281.12x = 159,148.08 × 81,827.04
  4. Step 4: Simplify right side
    115,281.12x = 13,022,616,308.08
  5. Step 5: Solve for x
    x = 13,022,616,308.08/115,281.12
  6. Step 6: Final answer
    x = 112,964.00

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1.5x scale

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.