Home / 156,629.60-234,987.60-77,746.40

Finding the Fourth Proportional to 156,629.60, 234,987.60 and 77,746.40

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Solution

The fourth proportional to 156,629.60, 234,987.60 and 77,746.40 is: 116,641.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,629.60 : 234,987.60 = 77,746.40 : x
  2. Step 2: Convert to fraction form
    156,629.60/234,987.60 = 77,746.40/x
  3. Step 3: Cross multiply
    156,629.60x = 234,987.60 × 77,746.40
  4. Step 4: Simplify right side
    156,629.60x = 18,269,439,944.64
  5. Step 5: Solve for x
    x = 18,269,439,944.64/156,629.60
  6. Step 6: Final answer
    x = 116,641.04

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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.