Home / 128,662.02-177,553.08-72,073.26

Finding the Fourth Proportional to 128,662.02, 177,553.08 and 72,073.26

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Solution

The fourth proportional to 128,662.02, 177,553.08 and 72,073.26 is: 99,460.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,662.02 : 177,553.08 = 72,073.26 : x
  2. Step 2: Convert to fraction form
    128,662.02/177,553.08 = 72,073.26/x
  3. Step 3: Cross multiply
    128,662.02x = 177,553.08 × 72,073.26
  4. Step 4: Simplify right side
    128,662.02x = 12,796,829,298.64
  5. Step 5: Solve for x
    x = 12,796,829,298.64/128,662.02
  6. Step 6: Final answer
    x = 99,460.81

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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.