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Finding the Fourth Proportional to 93,420.20, 140,130.30 and 86,203.10

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Solution

The fourth proportional to 93,420.20, 140,130.30 and 86,203.10 is: 129,304.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,420.20 : 140,130.30 = 86,203.10 : x
  2. Step 2: Convert to fraction form
    93,420.20/140,130.30 = 86,203.10/x
  3. Step 3: Cross multiply
    93,420.20x = 140,130.30 × 86,203.10
  4. Step 4: Simplify right side
    93,420.20x = 12,079,666,263.93
  5. Step 5: Solve for x
    x = 12,079,666,263.93/93,420.20
  6. Step 6: Final answer
    x = 129,304.65

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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.