Home / 129,280.48-178,455.36-75,582.70

Finding the Fourth Proportional to 129,280.48, 178,455.36 and 75,582.70

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Solution

The fourth proportional to 129,280.48, 178,455.36 and 75,582.70 is: 104,332.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,280.48 : 178,455.36 = 75,582.70 : x
  2. Step 2: Convert to fraction form
    129,280.48/178,455.36 = 75,582.70/x
  3. Step 3: Cross multiply
    129,280.48x = 178,455.36 × 75,582.70
  4. Step 4: Simplify right side
    129,280.48x = 13,488,137,938.27
  5. Step 5: Solve for x
    x = 13,488,137,938.27/129,280.48
  6. Step 6: Final answer
    x = 104,332.36

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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.