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Finding the Fourth Proportional to 128,446.97, 177,253.99 and 70,303.41

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Solution

The fourth proportional to 128,446.97, 177,253.99 and 70,303.41 is: 97,017.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,446.97 : 177,253.99 = 70,303.41 : x
  2. Step 2: Convert to fraction form
    128,446.97/177,253.99 = 70,303.41/x
  3. Step 3: Cross multiply
    128,446.97x = 177,253.99 × 70,303.41
  4. Step 4: Simplify right side
    128,446.97x = 12,461,559,757.35
  5. Step 5: Solve for x
    x = 12,461,559,757.35/128,446.97
  6. Step 6: Final answer
    x = 97,017.16

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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.