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Finding the Fourth Proportional to 127,859.84, 176,364.24 and 84,838.40

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Solution

The fourth proportional to 127,859.84, 176,364.24 and 84,838.40 is: 117,022.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,859.84 : 176,364.24 = 84,838.40 : x
  2. Step 2: Convert to fraction form
    127,859.84/176,364.24 = 84,838.40/x
  3. Step 3: Cross multiply
    127,859.84x = 176,364.24 × 84,838.40
  4. Step 4: Simplify right side
    127,859.84x = 14,962,459,938.82
  5. Step 5: Solve for x
    x = 14,962,459,938.82/127,859.84
  6. Step 6: Final answer
    x = 117,022.36

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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.