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Finding the Fourth Proportional to 130,312.83, 179,816.52 and 72,955.29

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Solution

The fourth proportional to 130,312.83, 179,816.52 and 72,955.29 is: 100,669.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,312.83 : 179,816.52 = 72,955.29 : x
  2. Step 2: Convert to fraction form
    130,312.83/179,816.52 = 72,955.29/x
  3. Step 3: Cross multiply
    130,312.83x = 179,816.52 × 72,955.29
  4. Step 4: Simplify right side
    130,312.83x = 13,118,566,363.39
  5. Step 5: Solve for x
    x = 13,118,566,363.39/130,312.83
  6. Step 6: Final answer
    x = 100,669.80

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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.