Home / 91,453.46-137,130.06-28,256.45

Finding the Fourth Proportional to 91,453.46, 137,130.06 and 28,256.45

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Solution

The fourth proportional to 91,453.46, 137,130.06 and 28,256.45 is: 42,369.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,453.46 : 137,130.06 = 28,256.45 : x
  2. Step 2: Convert to fraction form
    91,453.46/137,130.06 = 28,256.45/x
  3. Step 3: Cross multiply
    91,453.46x = 137,130.06 × 28,256.45
  4. Step 4: Simplify right side
    91,453.46x = 3,874,808,104.20
  5. Step 5: Solve for x
    x = 3,874,808,104.20/91,453.46
  6. Step 6: Final answer
    x = 42,369.18

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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.