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Finding the Fourth Proportional to 460,079.61, 690,128.58 and 123,119.70

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Solution

The fourth proportional to 460,079.61, 690,128.58 and 123,119.70 is: 184,682.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,079.61 : 690,128.58 = 123,119.70 : x
  2. Step 2: Convert to fraction form
    460,079.61/690,128.58 = 123,119.70/x
  3. Step 3: Cross multiply
    460,079.61x = 690,128.58 × 123,119.70
  4. Step 4: Simplify right side
    460,079.61x = 84,968,423,731.03
  5. Step 5: Solve for x
    x = 84,968,423,731.03/460,079.61
  6. Step 6: Final answer
    x = 184,682.00

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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.