Home / 88,108.58-121,500.47-75,403.94

Finding the Fourth Proportional to 88,108.58, 121,500.47 and 75,403.94

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Solution

The fourth proportional to 88,108.58, 121,500.47 and 75,403.94 is: 103,980.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,108.58 : 121,500.47 = 75,403.94 : x
  2. Step 2: Convert to fraction form
    88,108.58/121,500.47 = 75,403.94/x
  3. Step 3: Cross multiply
    88,108.58x = 121,500.47 × 75,403.94
  4. Step 4: Simplify right side
    88,108.58x = 9,161,613,730.86
  5. Step 5: Solve for x
    x = 9,161,613,730.86/88,108.58
  6. Step 6: Final answer
    x = 103,980.95

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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.