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Finding the Fourth Proportional to 130,702.29, 180,387.11 and 73,345

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Solution

The fourth proportional to 130,702.29, 180,387.11 and 73,345 is: 101,226.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,702.29 : 180,387.11 = 73,345 : x
  2. Step 2: Convert to fraction form
    130,702.29/180,387.11 = 73,345/x
  3. Step 3: Cross multiply
    130,702.29x = 180,387.11 × 73,345
  4. Step 4: Simplify right side
    130,702.29x = 13,230,492,582.95
  5. Step 5: Solve for x
    x = 13,230,492,582.95/130,702.29
  6. Step 6: Final answer
    x = 101,226.17

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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.