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Finding the Fourth Proportional to 90,950.16, 136,510.56 and 55,958.16

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Solution

The fourth proportional to 90,950.16, 136,510.56 and 55,958.16 is: 83,989.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,950.16 : 136,510.56 = 55,958.16 : x
  2. Step 2: Convert to fraction form
    90,950.16/136,510.56 = 55,958.16/x
  3. Step 3: Cross multiply
    90,950.16x = 136,510.56 × 55,958.16
  4. Step 4: Simplify right side
    90,950.16x = 7,638,879,758.17
  5. Step 5: Solve for x
    x = 7,638,879,758.17/90,950.16
  6. Step 6: Final answer
    x = 83,989.73

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1.5x scale

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.