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Finding the Fourth Proportional to 91,706.34, 137,356.29 and 70,490.16

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Solution

The fourth proportional to 91,706.34, 137,356.29 and 70,490.16 is: 105,579.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,706.34 : 137,356.29 = 70,490.16 : x
  2. Step 2: Convert to fraction form
    91,706.34/137,356.29 = 70,490.16/x
  3. Step 3: Cross multiply
    91,706.34x = 137,356.29 × 70,490.16
  4. Step 4: Simplify right side
    91,706.34x = 9,682,266,859.11
  5. Step 5: Solve for x
    x = 9,682,266,859.11/91,706.34
  6. Step 6: Final answer
    x = 105,579.03

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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.