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Finding the Fourth Proportional to 158,830.82, 219,185.01 and 87,210.21

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Solution

The fourth proportional to 158,830.82, 219,185.01 and 87,210.21 is: 120,349.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,830.82 : 219,185.01 = 87,210.21 : x
  2. Step 2: Convert to fraction form
    158,830.82/219,185.01 = 87,210.21/x
  3. Step 3: Cross multiply
    158,830.82x = 219,185.01 × 87,210.21
  4. Step 4: Simplify right side
    158,830.82x = 19,115,170,750.95
  5. Step 5: Solve for x
    x = 19,115,170,750.95/158,830.82
  6. Step 6: Final answer
    x = 120,349.26

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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.