Home / 129,533.40-178,752.60-72,943.56

Finding the Fourth Proportional to 129,533.40, 178,752.60 and 72,943.56

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Solution

The fourth proportional to 129,533.40, 178,752.60 and 72,943.56 is: 100,660.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,533.40 : 178,752.60 = 72,943.56 : x
  2. Step 2: Convert to fraction form
    129,533.40/178,752.60 = 72,943.56/x
  3. Step 3: Cross multiply
    129,533.40x = 178,752.60 × 72,943.56
  4. Step 4: Simplify right side
    129,533.40x = 13,038,851,003.26
  5. Step 5: Solve for x
    x = 13,038,851,003.26/129,533.40
  6. Step 6: Final answer
    x = 100,660.15

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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.