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Finding the Fourth Proportional to 153,980.73, 212,558.19 and 93,570.78

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Solution

The fourth proportional to 153,980.73, 212,558.19 and 93,570.78 is: 129,167.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,980.73 : 212,558.19 = 93,570.78 : x
  2. Step 2: Convert to fraction form
    153,980.73/212,558.19 = 93,570.78/x
  3. Step 3: Cross multiply
    153,980.73x = 212,558.19 × 93,570.78
  4. Step 4: Simplify right side
    153,980.73x = 19,889,235,633.69
  5. Step 5: Solve for x
    x = 19,889,235,633.69/153,980.73
  6. Step 6: Final answer
    x = 129,167.04

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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.