Home / 99,528.88-137,353.76-56,512.40

Finding the Fourth Proportional to 99,528.88, 137,353.76 and 56,512.40

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Solution

The fourth proportional to 99,528.88, 137,353.76 and 56,512.40 is: 77,989.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,528.88 : 137,353.76 = 56,512.40 : x
  2. Step 2: Convert to fraction form
    99,528.88/137,353.76 = 56,512.40/x
  3. Step 3: Cross multiply
    99,528.88x = 137,353.76 × 56,512.40
  4. Step 4: Simplify right side
    99,528.88x = 7,762,190,626.62
  5. Step 5: Solve for x
    x = 7,762,190,626.62/99,528.88
  6. Step 6: Final answer
    x = 77,989.33

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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.