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Finding the Fourth Proportional to 106,360.80, 159,541.20 and 56,421.60

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Solution

The fourth proportional to 106,360.80, 159,541.20 and 56,421.60 is: 84,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,360.80 : 159,541.20 = 56,421.60 : x
  2. Step 2: Convert to fraction form
    106,360.80/159,541.20 = 56,421.60/x
  3. Step 3: Cross multiply
    106,360.80x = 159,541.20 × 56,421.60
  4. Step 4: Simplify right side
    106,360.80x = 9,001,569,769.92
  5. Step 5: Solve for x
    x = 9,001,569,769.92/106,360.80
  6. Step 6: Final answer
    x = 84,632.40

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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.