Home / 100,013.62-137,953.74-64,146.82

Finding the Fourth Proportional to 100,013.62, 137,953.74 and 64,146.82

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Solution

The fourth proportional to 100,013.62, 137,953.74 and 64,146.82 is: 88,480.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,013.62 : 137,953.74 = 64,146.82 : x
  2. Step 2: Convert to fraction form
    100,013.62/137,953.74 = 64,146.82/x
  3. Step 3: Cross multiply
    100,013.62x = 137,953.74 × 64,146.82
  4. Step 4: Simplify right side
    100,013.62x = 8,849,293,728.11
  5. Step 5: Solve for x
    x = 8,849,293,728.11/100,013.62
  6. Step 6: Final answer
    x = 88,480.89

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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.