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Finding the Fourth Proportional to 127,431, 175,859.64 and 70,846.56

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Solution

The fourth proportional to 127,431, 175,859.64 and 70,846.56 is: 97,770.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,431 : 175,859.64 = 70,846.56 : x
  2. Step 2: Convert to fraction form
    127,431/175,859.64 = 70,846.56/x
  3. Step 3: Cross multiply
    127,431x = 175,859.64 × 70,846.56
  4. Step 4: Simplify right side
    127,431x = 12,459,050,536.84
  5. Step 5: Solve for x
    x = 12,459,050,536.84/127,431
  6. Step 6: Final answer
    x = 97,770.95

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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.