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Finding the Fourth Proportional to 126,897.84, 175,122 and 70,308

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Solution

The fourth proportional to 126,897.84, 175,122 and 70,308 is: 97,026.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,897.84 : 175,122 = 70,308 : x
  2. Step 2: Convert to fraction form
    126,897.84/175,122 = 70,308/x
  3. Step 3: Cross multiply
    126,897.84x = 175,122 × 70,308
  4. Step 4: Simplify right side
    126,897.84x = 12,312,477,576
  5. Step 5: Solve for x
    x = 12,312,477,576/126,897.84
  6. Step 6: Final answer
    x = 97,026.69

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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.