Home / 129,979.04-195,030.55-70,813.40

Finding the Fourth Proportional to 129,979.04, 195,030.55 and 70,813.40

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Solution

The fourth proportional to 129,979.04, 195,030.55 and 70,813.40 is: 106,253.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,979.04 : 195,030.55 = 70,813.40 : x
  2. Step 2: Convert to fraction form
    129,979.04/195,030.55 = 70,813.40/x
  3. Step 3: Cross multiply
    129,979.04x = 195,030.55 × 70,813.40
  4. Step 4: Simplify right side
    129,979.04x = 13,810,776,349.37
  5. Step 5: Solve for x
    x = 13,810,776,349.37/129,979.04
  6. Step 6: Final answer
    x = 106,253.87

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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.