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Finding the Fourth Proportional to 89,312.76, 133,969.14 and 69,606.14

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Solution

The fourth proportional to 89,312.76, 133,969.14 and 69,606.14 is: 104,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,312.76 : 133,969.14 = 69,606.14 : x
  2. Step 2: Convert to fraction form
    89,312.76/133,969.14 = 69,606.14/x
  3. Step 3: Cross multiply
    89,312.76x = 133,969.14 × 69,606.14
  4. Step 4: Simplify right side
    89,312.76x = 9,325,074,044.67
  5. Step 5: Solve for x
    x = 9,325,074,044.67/89,312.76
  6. Step 6: Final answer
    x = 104,409.20

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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.