Home / 91,437.19-136,548.21-90,447.57

Finding the Fourth Proportional to 91,437.19, 136,548.21 and 90,447.57

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Solution

The fourth proportional to 91,437.19, 136,548.21 and 90,447.57 is: 135,070.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,437.19 : 136,548.21 = 90,447.57 : x
  2. Step 2: Convert to fraction form
    91,437.19/136,548.21 = 90,447.57/x
  3. Step 3: Cross multiply
    91,437.19x = 136,548.21 × 90,447.57
  4. Step 4: Simplify right side
    91,437.19x = 12,350,453,782.35
  5. Step 5: Solve for x
    x = 12,350,453,782.35/91,437.19
  6. Step 6: Final answer
    x = 135,070.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.