Home / 99,574.12-149,531.64-66,506.68

Finding the Fourth Proportional to 99,574.12, 149,531.64 and 66,506.68

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Solution

The fourth proportional to 99,574.12, 149,531.64 and 66,506.68 is: 99,873.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,574.12 : 149,531.64 = 66,506.68 : x
  2. Step 2: Convert to fraction form
    99,574.12/149,531.64 = 66,506.68/x
  3. Step 3: Cross multiply
    99,574.12x = 149,531.64 × 66,506.68
  4. Step 4: Simplify right side
    99,574.12x = 9,944,852,931.36
  5. Step 5: Solve for x
    x = 9,944,852,931.36/99,574.12
  6. Step 6: Final answer
    x = 99,873.87

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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.