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Finding the Fourth Proportional to 152,315.88, 210,198.14 and 87,749.50

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Solution

The fourth proportional to 152,315.88, 210,198.14 and 87,749.50 is: 121,095.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,315.88 : 210,198.14 = 87,749.50 : x
  2. Step 2: Convert to fraction form
    152,315.88/210,198.14 = 87,749.50/x
  3. Step 3: Cross multiply
    152,315.88x = 210,198.14 × 87,749.50
  4. Step 4: Simplify right side
    152,315.88x = 18,444,781,685.93
  5. Step 5: Solve for x
    x = 18,444,781,685.93/152,315.88
  6. Step 6: Final answer
    x = 121,095.59

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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.