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Finding the Fourth Proportional to 93,311.70, 139,967.55 and 55,986.90

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Solution

The fourth proportional to 93,311.70, 139,967.55 and 55,986.90 is: 83,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,311.70 : 139,967.55 = 55,986.90 : x
  2. Step 2: Convert to fraction form
    93,311.70/139,967.55 = 55,986.90/x
  3. Step 3: Cross multiply
    93,311.70x = 139,967.55 × 55,986.90
  4. Step 4: Simplify right side
    93,311.70x = 7,836,349,225.10
  5. Step 5: Solve for x
    x = 7,836,349,225.10/93,311.70
  6. Step 6: Final answer
    x = 83,980.35

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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.