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Finding the Fourth Proportional to 119,497.61, 164,911.40 and 65,787.63

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Solution

The fourth proportional to 119,497.61, 164,911.40 and 65,787.63 is: 90,789.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,497.61 : 164,911.40 = 65,787.63 : x
  2. Step 2: Convert to fraction form
    119,497.61/164,911.40 = 65,787.63/x
  3. Step 3: Cross multiply
    119,497.61x = 164,911.40 × 65,787.63
  4. Step 4: Simplify right side
    119,497.61x = 10,849,129,012.49
  5. Step 5: Solve for x
    x = 10,849,129,012.49/119,497.61
  6. Step 6: Final answer
    x = 90,789.51

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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.