Home / 163,538.30-245,307.45-135,890.30

Finding the Fourth Proportional to 163,538.30, 245,307.45 and 135,890.30

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Solution

The fourth proportional to 163,538.30, 245,307.45 and 135,890.30 is: 203,835.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,538.30 : 245,307.45 = 135,890.30 : x
  2. Step 2: Convert to fraction form
    163,538.30/245,307.45 = 135,890.30/x
  3. Step 3: Cross multiply
    163,538.30x = 245,307.45 × 135,890.30
  4. Step 4: Simplify right side
    163,538.30x = 33,334,902,972.74
  5. Step 5: Solve for x
    x = 33,334,902,972.74/163,538.30
  6. Step 6: Final answer
    x = 203,835.45

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Double scale
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Similar ratio
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1.5x scale

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.