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Finding the Fourth Proportional to 130,009.28, 179,468.04 and 79,038.28

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Solution

The fourth proportional to 130,009.28, 179,468.04 and 79,038.28 is: 109,106.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,009.28 : 179,468.04 = 79,038.28 : x
  2. Step 2: Convert to fraction form
    130,009.28/179,468.04 = 79,038.28/x
  3. Step 3: Cross multiply
    130,009.28x = 179,468.04 × 79,038.28
  4. Step 4: Simplify right side
    130,009.28x = 14,184,845,196.57
  5. Step 5: Solve for x
    x = 14,184,845,196.57/130,009.28
  6. Step 6: Final answer
    x = 109,106.41

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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.