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Finding the Fourth Proportional to 120,378.88, 180,614.40 and 58,044.16

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Solution

The fourth proportional to 120,378.88, 180,614.40 and 58,044.16 is: 87,088.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,378.88 : 180,614.40 = 58,044.16 : x
  2. Step 2: Convert to fraction form
    120,378.88/180,614.40 = 58,044.16/x
  3. Step 3: Cross multiply
    120,378.88x = 180,614.40 × 58,044.16
  4. Step 4: Simplify right side
    120,378.88x = 10,483,611,131.90
  5. Step 5: Solve for x
    x = 10,483,611,131.90/120,378.88
  6. Step 6: Final answer
    x = 87,088.46

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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.