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Finding the Fourth Proportional to 93,879.99, 129,281.34 and 87,876.66

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Solution

The fourth proportional to 93,879.99, 129,281.34 and 87,876.66 is: 121,014.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,879.99 : 129,281.34 = 87,876.66 : x
  2. Step 2: Convert to fraction form
    93,879.99/129,281.34 = 87,876.66/x
  3. Step 3: Cross multiply
    93,879.99x = 129,281.34 × 87,876.66
  4. Step 4: Simplify right side
    93,879.99x = 11,360,812,359.52
  5. Step 5: Solve for x
    x = 11,360,812,359.52/93,879.99
  6. Step 6: Final answer
    x = 121,014.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.