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Finding the Fourth Proportional to 153,456.92, 211,776.30 and 84,549.22

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Solution

The fourth proportional to 153,456.92, 211,776.30 and 84,549.22 is: 116,681.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,456.92 : 211,776.30 = 84,549.22 : x
  2. Step 2: Convert to fraction form
    153,456.92/211,776.30 = 84,549.22/x
  3. Step 3: Cross multiply
    153,456.92x = 211,776.30 × 84,549.22
  4. Step 4: Simplify right side
    153,456.92x = 17,905,520,979.49
  5. Step 5: Solve for x
    x = 17,905,520,979.49/153,456.92
  6. Step 6: Final answer
    x = 116,681.09

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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.