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Finding the Fourth Proportional to 158,348.58, 218,509.80 and 90,349.62

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Solution

The fourth proportional to 158,348.58, 218,509.80 and 90,349.62 is: 124,676.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,348.58 : 218,509.80 = 90,349.62 : x
  2. Step 2: Convert to fraction form
    158,348.58/218,509.80 = 90,349.62/x
  3. Step 3: Cross multiply
    158,348.58x = 218,509.80 × 90,349.62
  4. Step 4: Simplify right side
    158,348.58x = 19,742,277,396.28
  5. Step 5: Solve for x
    x = 19,742,277,396.28/158,348.58
  6. Step 6: Final answer
    x = 124,676.06

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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.