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Finding the Fourth Proportional to 119,445.90, 164,838 and 65,730.84

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Solution

The fourth proportional to 119,445.90, 164,838 and 65,730.84 is: 90,710.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,445.90 : 164,838 = 65,730.84 : x
  2. Step 2: Convert to fraction form
    119,445.90/164,838 = 65,730.84/x
  3. Step 3: Cross multiply
    119,445.90x = 164,838 × 65,730.84
  4. Step 4: Simplify right side
    119,445.90x = 10,834,940,203.92
  5. Step 5: Solve for x
    x = 10,834,940,203.92/119,445.90
  6. Step 6: Final answer
    x = 90,710.02

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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.