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Finding the Fourth Proportional to 130,897.98, 180,634.35 and 79,995.90

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Solution

The fourth proportional to 130,897.98, 180,634.35 and 79,995.90 is: 110,391.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,897.98 : 180,634.35 = 79,995.90 : x
  2. Step 2: Convert to fraction form
    130,897.98/180,634.35 = 79,995.90/x
  3. Step 3: Cross multiply
    130,897.98x = 180,634.35 × 79,995.90
  4. Step 4: Simplify right side
    130,897.98x = 14,450,007,399.17
  5. Step 5: Solve for x
    x = 14,450,007,399.17/130,897.98
  6. Step 6: Final answer
    x = 110,391.37

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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.