Home / 91,007.10-135,798.68-81,550.82

Finding the Fourth Proportional to 91,007.10, 135,798.68 and 81,550.82

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Solution

The fourth proportional to 91,007.10, 135,798.68 and 81,550.82 is: 121,688.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,007.10 : 135,798.68 = 81,550.82 : x
  2. Step 2: Convert to fraction form
    91,007.10/135,798.68 = 81,550.82/x
  3. Step 3: Cross multiply
    91,007.10x = 135,798.68 × 81,550.82
  4. Step 4: Simplify right side
    91,007.10x = 11,074,492,622.17
  5. Step 5: Solve for x
    x = 11,074,492,622.17/91,007.10
  6. Step 6: Final answer
    x = 121,688.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.