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Finding the Fourth Proportional to 93,325.80, 139,988.70 and 51,189.60

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Solution

The fourth proportional to 93,325.80, 139,988.70 and 51,189.60 is: 76,784.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,325.80 : 139,988.70 = 51,189.60 : x
  2. Step 2: Convert to fraction form
    93,325.80/139,988.70 = 51,189.60/x
  3. Step 3: Cross multiply
    93,325.80x = 139,988.70 × 51,189.60
  4. Step 4: Simplify right side
    93,325.80x = 7,165,965,557.52
  5. Step 5: Solve for x
    x = 7,165,965,557.52/93,325.80
  6. Step 6: Final answer
    x = 76,784.40

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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.