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Finding the Fourth Proportional to 99,775.54, 137,672.12 and 58,946.32

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Solution

The fourth proportional to 99,775.54, 137,672.12 and 58,946.32 is: 81,335.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,775.54 : 137,672.12 = 58,946.32 : x
  2. Step 2: Convert to fraction form
    99,775.54/137,672.12 = 58,946.32/x
  3. Step 3: Cross multiply
    99,775.54x = 137,672.12 × 58,946.32
  4. Step 4: Simplify right side
    99,775.54x = 8,115,264,840.60
  5. Step 5: Solve for x
    x = 8,115,264,840.60/99,775.54
  6. Step 6: Final answer
    x = 81,335.21

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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.