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Finding the Fourth Proportional to 89,898.60, 134,880.30 and 86,658.60

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Solution

The fourth proportional to 89,898.60, 134,880.30 and 86,658.60 is: 130,019.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,898.60 : 134,880.30 = 86,658.60 : x
  2. Step 2: Convert to fraction form
    89,898.60/134,880.30 = 86,658.60/x
  3. Step 3: Cross multiply
    89,898.60x = 134,880.30 × 86,658.60
  4. Step 4: Simplify right side
    89,898.60x = 11,688,537,965.58
  5. Step 5: Solve for x
    x = 11,688,537,965.58/89,898.60
  6. Step 6: Final answer
    x = 130,019.13

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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.