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Finding the Fourth Proportional to 170,465.56, 255,814.98 and 87,417.88

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Solution

The fourth proportional to 170,465.56, 255,814.98 and 87,417.88 is: 131,186.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,465.56 : 255,814.98 = 87,417.88 : x
  2. Step 2: Convert to fraction form
    170,465.56/255,814.98 = 87,417.88/x
  3. Step 3: Cross multiply
    170,465.56x = 255,814.98 × 87,417.88
  4. Step 4: Simplify right side
    170,465.56x = 22,362,803,223.84
  5. Step 5: Solve for x
    x = 22,362,803,223.84/170,465.56
  6. Step 6: Final answer
    x = 131,186.64

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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.