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Finding the Fourth Proportional to 91,373.70, 137,133.63 and 88,457.70

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Solution

The fourth proportional to 91,373.70, 137,133.63 and 88,457.70 is: 132,757.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,373.70 : 137,133.63 = 88,457.70 : x
  2. Step 2: Convert to fraction form
    91,373.70/137,133.63 = 88,457.70/x
  3. Step 3: Cross multiply
    91,373.70x = 137,133.63 × 88,457.70
  4. Step 4: Simplify right side
    91,373.70x = 12,130,525,502.45
  5. Step 5: Solve for x
    x = 12,130,525,502.45/91,373.70
  6. Step 6: Final answer
    x = 132,757.30

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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.