Home / 129,022.36-178,051.08-72,434.14

Finding the Fourth Proportional to 129,022.36, 178,051.08 and 72,434.14

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Solution

The fourth proportional to 129,022.36, 178,051.08 and 72,434.14 is: 99,959.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,022.36 : 178,051.08 = 72,434.14 : x
  2. Step 2: Convert to fraction form
    129,022.36/178,051.08 = 72,434.14/x
  3. Step 3: Cross multiply
    129,022.36x = 178,051.08 × 72,434.14
  4. Step 4: Simplify right side
    129,022.36x = 12,896,976,855.87
  5. Step 5: Solve for x
    x = 12,896,976,855.87/129,022.36
  6. Step 6: Final answer
    x = 99,959.24

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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.