Home / 100,328.95-149,609.17-99,429.58

Finding the Fourth Proportional to 100,328.95, 149,609.17 and 99,429.58

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Solution

The fourth proportional to 100,328.95, 149,609.17 and 99,429.58 is: 148,268.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,328.95 : 149,609.17 = 99,429.58 : x
  2. Step 2: Convert to fraction form
    100,328.95/149,609.17 = 99,429.58/x
  3. Step 3: Cross multiply
    100,328.95x = 149,609.17 × 99,429.58
  4. Step 4: Simplify right side
    100,328.95x = 14,875,576,937.25
  5. Step 5: Solve for x
    x = 14,875,576,937.25/100,328.95
  6. Step 6: Final answer
    x = 148,268.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.