Home / 91,639.17-137,457.27-89,377.65

Finding the Fourth Proportional to 91,639.17, 137,457.27 and 89,377.65

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Solution

The fourth proportional to 91,639.17, 137,457.27 and 89,377.65 is: 134,065.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,639.17 : 137,457.27 = 89,377.65 : x
  2. Step 2: Convert to fraction form
    91,639.17/137,457.27 = 89,377.65/x
  3. Step 3: Cross multiply
    91,639.17x = 137,457.27 × 89,377.65
  4. Step 4: Simplify right side
    91,639.17x = 12,285,607,768.02
  5. Step 5: Solve for x
    x = 12,285,607,768.02/91,639.17
  6. Step 6: Final answer
    x = 134,065.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.