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Finding the Fourth Proportional to 158,618.70, 218,779.11 and 134,707.50

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Solution

The fourth proportional to 158,618.70, 218,779.11 and 134,707.50 is: 185,798.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,618.70 : 218,779.11 = 134,707.50 : x
  2. Step 2: Convert to fraction form
    158,618.70/218,779.11 = 134,707.50/x
  3. Step 3: Cross multiply
    158,618.70x = 218,779.11 × 134,707.50
  4. Step 4: Simplify right side
    158,618.70x = 29,471,186,960.33
  5. Step 5: Solve for x
    x = 29,471,186,960.33/158,618.70
  6. Step 6: Final answer
    x = 185,798.94

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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.