Home / 158,830.16-219,188.75-87,209.55

Finding the Fourth Proportional to 158,830.16, 219,188.75 and 87,209.55

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Solution

The fourth proportional to 158,830.16, 219,188.75 and 87,209.55 is: 120,350.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,830.16 : 219,188.75 = 87,209.55 : x
  2. Step 2: Convert to fraction form
    158,830.16/219,188.75 = 87,209.55/x
  3. Step 3: Cross multiply
    158,830.16x = 219,188.75 × 87,209.55
  4. Step 4: Simplify right side
    158,830.16x = 19,115,351,816.51
  5. Step 5: Solve for x
    x = 19,115,351,816.51/158,830.16
  6. Step 6: Final answer
    x = 120,350.90

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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.