Home / 88,931.70-133,397.55-85,821.30

Finding the Fourth Proportional to 88,931.70, 133,397.55 and 85,821.30

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Solution

The fourth proportional to 88,931.70, 133,397.55 and 85,821.30 is: 128,731.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,931.70 : 133,397.55 = 85,821.30 : x
  2. Step 2: Convert to fraction form
    88,931.70/133,397.55 = 85,821.30/x
  3. Step 3: Cross multiply
    88,931.70x = 133,397.55 × 85,821.30
  4. Step 4: Simplify right side
    88,931.70x = 11,448,351,157.82
  5. Step 5: Solve for x
    x = 11,448,351,157.82/88,931.70
  6. Step 6: Final answer
    x = 128,731.95

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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.