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Finding the Fourth Proportional to 127,159.84, 175,478.88 and 70,570

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Solution

The fourth proportional to 127,159.84, 175,478.88 and 70,570 is: 97,385.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,159.84 : 175,478.88 = 70,570 : x
  2. Step 2: Convert to fraction form
    127,159.84/175,478.88 = 70,570/x
  3. Step 3: Cross multiply
    127,159.84x = 175,478.88 × 70,570
  4. Step 4: Simplify right side
    127,159.84x = 12,383,544,561.60
  5. Step 5: Solve for x
    x = 12,383,544,561.60/127,159.84
  6. Step 6: Final answer
    x = 97,385.66

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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.