Home / 99,712.08-137,602.86-54,390.12

Finding the Fourth Proportional to 99,712.08, 137,602.86 and 54,390.12

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Solution

The fourth proportional to 99,712.08, 137,602.86 and 54,390.12 is: 75,058.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,712.08 : 137,602.86 = 54,390.12 : x
  2. Step 2: Convert to fraction form
    99,712.08/137,602.86 = 54,390.12/x
  3. Step 3: Cross multiply
    99,712.08x = 137,602.86 × 54,390.12
  4. Step 4: Simplify right side
    99,712.08x = 7,484,236,067.74
  5. Step 5: Solve for x
    x = 7,484,236,067.74/99,712.08
  6. Step 6: Final answer
    x = 75,058.47

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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.