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Finding the Fourth Proportional to 93,323.70, 139,985.55 and 81,659.70

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Solution

The fourth proportional to 93,323.70, 139,985.55 and 81,659.70 is: 122,489.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,323.70 : 139,985.55 = 81,659.70 : x
  2. Step 2: Convert to fraction form
    93,323.70/139,985.55 = 81,659.70/x
  3. Step 3: Cross multiply
    93,323.70x = 139,985.55 × 81,659.70
  4. Step 4: Simplify right side
    93,323.70x = 11,431,178,017.34
  5. Step 5: Solve for x
    x = 11,431,178,017.34/93,323.70
  6. Step 6: Final answer
    x = 122,489.55

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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.