Home / 129,025.36-178,055.22-72,437.14

Finding the Fourth Proportional to 129,025.36, 178,055.22 and 72,437.14

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Solution

The fourth proportional to 129,025.36, 178,055.22 and 72,437.14 is: 99,963.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,025.36 : 178,055.22 = 72,437.14 : x
  2. Step 2: Convert to fraction form
    129,025.36/178,055.22 = 72,437.14/x
  3. Step 3: Cross multiply
    129,025.36x = 178,055.22 × 72,437.14
  4. Step 4: Simplify right side
    129,025.36x = 12,897,810,898.87
  5. Step 5: Solve for x
    x = 12,897,810,898.87/129,025.36
  6. Step 6: Final answer
    x = 99,963.38

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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.