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Finding the Fourth Proportional to 128,533.80, 192,671.10 and 58,463.40

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Solution

The fourth proportional to 128,533.80, 192,671.10 and 58,463.40 is: 87,636.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,533.80 : 192,671.10 = 58,463.40 : x
  2. Step 2: Convert to fraction form
    128,533.80/192,671.10 = 58,463.40/x
  3. Step 3: Cross multiply
    128,533.80x = 192,671.10 × 58,463.40
  4. Step 4: Simplify right side
    128,533.80x = 11,264,207,587.74
  5. Step 5: Solve for x
    x = 11,264,207,587.74/128,533.80
  6. Step 6: Final answer
    x = 87,636.15

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1.5x scale

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.