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Finding the Fourth Proportional to 127,503.76, 175,961.82 and 70,915

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Solution

The fourth proportional to 127,503.76, 175,961.82 and 70,915 is: 97,866.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,503.76 : 175,961.82 = 70,915 : x
  2. Step 2: Convert to fraction form
    127,503.76/175,961.82 = 70,915/x
  3. Step 3: Cross multiply
    127,503.76x = 175,961.82 × 70,915
  4. Step 4: Simplify right side
    127,503.76x = 12,478,332,465.30
  5. Step 5: Solve for x
    x = 12,478,332,465.30/127,503.76
  6. Step 6: Final answer
    x = 97,866.39

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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.