Home / 189,439.04-261,421.88-103,395.17

Finding the Fourth Proportional to 189,439.04, 261,421.88 and 103,395.17

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Solution

The fourth proportional to 189,439.04, 261,421.88 and 103,395.17 is: 142,683.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,439.04 : 261,421.88 = 103,395.17 : x
  2. Step 2: Convert to fraction form
    189,439.04/261,421.88 = 103,395.17/x
  3. Step 3: Cross multiply
    189,439.04x = 261,421.88 × 103,395.17
  4. Step 4: Simplify right side
    189,439.04x = 27,029,757,900.23
  5. Step 5: Solve for x
    x = 27,029,757,900.23/189,439.04
  6. Step 6: Final answer
    x = 142,683.15

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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.