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Finding the Fourth Proportional to 124,311.51, 171,549.90 and 67,722.75

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Solution

The fourth proportional to 124,311.51, 171,549.90 and 67,722.75 is: 93,457.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,311.51 : 171,549.90 = 67,722.75 : x
  2. Step 2: Convert to fraction form
    124,311.51/171,549.90 = 67,722.75/x
  3. Step 3: Cross multiply
    124,311.51x = 171,549.90 × 67,722.75
  4. Step 4: Simplify right side
    124,311.51x = 11,617,830,990.23
  5. Step 5: Solve for x
    x = 11,617,830,990.23/124,311.51
  6. Step 6: Final answer
    x = 93,457.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.