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Finding the Fourth Proportional to 127,356.52, 175,678.80 and 79,526.84

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Solution

The fourth proportional to 127,356.52, 175,678.80 and 79,526.84 is: 109,701.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,356.52 : 175,678.80 = 79,526.84 : x
  2. Step 2: Convert to fraction form
    127,356.52/175,678.80 = 79,526.84/x
  3. Step 3: Cross multiply
    127,356.52x = 175,678.80 × 79,526.84
  4. Step 4: Simplify right side
    127,356.52x = 13,971,179,818.99
  5. Step 5: Solve for x
    x = 13,971,179,818.99/127,356.52
  6. Step 6: Final answer
    x = 109,701.33

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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.