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Finding the Fourth Proportional to 169,920.10, 254,916.60 and 51,603.40

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Solution

The fourth proportional to 169,920.10, 254,916.60 and 51,603.40 is: 77,416.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,920.10 : 254,916.60 = 51,603.40 : x
  2. Step 2: Convert to fraction form
    169,920.10/254,916.60 = 51,603.40/x
  3. Step 3: Cross multiply
    169,920.10x = 254,916.60 × 51,603.40
  4. Step 4: Simplify right side
    169,920.10x = 13,154,563,276.44
  5. Step 5: Solve for x
    x = 13,154,563,276.44/169,920.10
  6. Step 6: Final answer
    x = 77,416.17

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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.