Home / 158,133.12-236,815.72-86,947.08

Finding the Fourth Proportional to 158,133.12, 236,815.72 and 86,947.08

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Solution

The fourth proportional to 158,133.12, 236,815.72 and 86,947.08 is: 130,209.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,133.12 : 236,815.72 = 86,947.08 : x
  2. Step 2: Convert to fraction form
    158,133.12/236,815.72 = 86,947.08/x
  3. Step 3: Cross multiply
    158,133.12x = 236,815.72 × 86,947.08
  4. Step 4: Simplify right side
    158,133.12x = 20,590,435,352.10
  5. Step 5: Solve for x
    x = 20,590,435,352.10/158,133.12
  6. Step 6: Final answer
    x = 130,209.51

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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.