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Finding the Fourth Proportional to 88,730.10, 133,095.15 and 85,230.90

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Solution

The fourth proportional to 88,730.10, 133,095.15 and 85,230.90 is: 127,846.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,730.10 : 133,095.15 = 85,230.90 : x
  2. Step 2: Convert to fraction form
    88,730.10/133,095.15 = 85,230.90/x
  3. Step 3: Cross multiply
    88,730.10x = 133,095.15 × 85,230.90
  4. Step 4: Simplify right side
    88,730.10x = 11,343,819,420.14
  5. Step 5: Solve for x
    x = 11,343,819,420.14/88,730.10
  6. Step 6: Final answer
    x = 127,846.35

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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.