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Finding the Fourth Proportional to 99,574.05, 137,462.99 and 67,478.23

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Solution

The fourth proportional to 99,574.05, 137,462.99 and 67,478.23 is: 93,154.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,574.05 : 137,462.99 = 67,478.23 : x
  2. Step 2: Convert to fraction form
    99,574.05/137,462.99 = 67,478.23/x
  3. Step 3: Cross multiply
    99,574.05x = 137,462.99 × 67,478.23
  4. Step 4: Simplify right side
    99,574.05x = 9,275,758,918.32
  5. Step 5: Solve for x
    x = 9,275,758,918.32/99,574.05
  6. Step 6: Final answer
    x = 93,154.38

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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.