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Finding the Fourth Proportional to 158,907.80, 219,286.88 and 87,283.56

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Solution

The fourth proportional to 158,907.80, 219,286.88 and 87,283.56 is: 120,448.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,907.80 : 219,286.88 = 87,283.56 : x
  2. Step 2: Convert to fraction form
    158,907.80/219,286.88 = 87,283.56/x
  3. Step 3: Cross multiply
    158,907.80x = 219,286.88 × 87,283.56
  4. Step 4: Simplify right side
    158,907.80x = 19,140,139,547.69
  5. Step 5: Solve for x
    x = 19,140,139,547.69/158,907.80
  6. Step 6: Final answer
    x = 120,448.08

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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.