Home / 128,300.04-177,046.92-70,936.01

Finding the Fourth Proportional to 128,300.04, 177,046.92 and 70,936.01

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Solution

The fourth proportional to 128,300.04, 177,046.92 and 70,936.01 is: 97,887.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,300.04 : 177,046.92 = 70,936.01 : x
  2. Step 2: Convert to fraction form
    128,300.04/177,046.92 = 70,936.01/x
  3. Step 3: Cross multiply
    128,300.04x = 177,046.92 × 70,936.01
  4. Step 4: Simplify right side
    128,300.04x = 12,559,001,202.35
  5. Step 5: Solve for x
    x = 12,559,001,202.35/128,300.04
  6. Step 6: Final answer
    x = 97,887.74

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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.