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Finding the Fourth Proportional to 127,925.66, 176,609.70 and 84,978.79

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Solution

The fourth proportional to 127,925.66, 176,609.70 and 84,978.79 is: 117,318.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,925.66 : 176,609.70 = 84,978.79 : x
  2. Step 2: Convert to fraction form
    127,925.66/176,609.70 = 84,978.79/x
  3. Step 3: Cross multiply
    127,925.66x = 176,609.70 × 84,978.79
  4. Step 4: Simplify right side
    127,925.66x = 15,008,078,166.74
  5. Step 5: Solve for x
    x = 15,008,078,166.74/127,925.66
  6. Step 6: Final answer
    x = 117,318.74

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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.