Home / 89,624.70-134,437.05-85,688.10

Finding the Fourth Proportional to 89,624.70, 134,437.05 and 85,688.10

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Solution

The fourth proportional to 89,624.70, 134,437.05 and 85,688.10 is: 128,532.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,624.70 : 134,437.05 = 85,688.10 : x
  2. Step 2: Convert to fraction form
    89,624.70/134,437.05 = 85,688.10/x
  3. Step 3: Cross multiply
    89,624.70x = 134,437.05 × 85,688.10
  4. Step 4: Simplify right side
    89,624.70x = 11,519,655,384.11
  5. Step 5: Solve for x
    x = 11,519,655,384.11/89,624.70
  6. Step 6: Final answer
    x = 128,532.15

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Similar ratio
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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.