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Finding the Fourth Proportional to 130,807.42, 195,963.54 and 77,339.32

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Solution

The fourth proportional to 130,807.42, 195,963.54 and 77,339.32 is: 115,862.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,807.42 : 195,963.54 = 77,339.32 : x
  2. Step 2: Convert to fraction form
    130,807.42/195,963.54 = 77,339.32/x
  3. Step 3: Cross multiply
    130,807.42x = 195,963.54 × 77,339.32
  4. Step 4: Simplify right side
    130,807.42x = 15,155,686,928.39
  5. Step 5: Solve for x
    x = 15,155,686,928.39/130,807.42
  6. Step 6: Final answer
    x = 115,862.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.