Home / 102,590.34-141,633.53-78,199.82

Finding the Fourth Proportional to 102,590.34, 141,633.53 and 78,199.82

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Solution

The fourth proportional to 102,590.34, 141,633.53 and 78,199.82 is: 107,960.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,590.34 : 141,633.53 = 78,199.82 : x
  2. Step 2: Convert to fraction form
    102,590.34/141,633.53 = 78,199.82/x
  3. Step 3: Cross multiply
    102,590.34x = 141,633.53 × 78,199.82
  4. Step 4: Simplify right side
    102,590.34x = 11,075,716,551.96
  5. Step 5: Solve for x
    x = 11,075,716,551.96/102,590.34
  6. Step 6: Final answer
    x = 107,960.62

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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.