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Finding the Fourth Proportional to 153,703.75, 212,149.21 and 104,726.40

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Solution

The fourth proportional to 153,703.75, 212,149.21 and 104,726.40 is: 144,548.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,703.75 : 212,149.21 = 104,726.40 : x
  2. Step 2: Convert to fraction form
    153,703.75/212,149.21 = 104,726.40/x
  3. Step 3: Cross multiply
    153,703.75x = 212,149.21 × 104,726.40
  4. Step 4: Simplify right side
    153,703.75x = 22,217,622,463.47
  5. Step 5: Solve for x
    x = 22,217,622,463.47/153,703.75
  6. Step 6: Final answer
    x = 144,548.34

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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.