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Finding the Fourth Proportional to 130,123.62, 179,560.62 and 79,129.31

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Solution

The fourth proportional to 130,123.62, 179,560.62 and 79,129.31 is: 109,192.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,123.62 : 179,560.62 = 79,129.31 : x
  2. Step 2: Convert to fraction form
    130,123.62/179,560.62 = 79,129.31/x
  3. Step 3: Cross multiply
    130,123.62x = 179,560.62 × 79,129.31
  4. Step 4: Simplify right side
    130,123.62x = 14,208,507,963.77
  5. Step 5: Solve for x
    x = 14,208,507,963.77/130,123.62
  6. Step 6: Final answer
    x = 109,192.38

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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.