Home / 145,971.20-218,963.28-57,216.80

Finding the Fourth Proportional to 145,971.20, 218,963.28 and 57,216.80

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Solution

The fourth proportional to 145,971.20, 218,963.28 and 57,216.80 is: 85,827.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,971.20 : 218,963.28 = 57,216.80 : x
  2. Step 2: Convert to fraction form
    145,971.20/218,963.28 = 57,216.80/x
  3. Step 3: Cross multiply
    145,971.20x = 218,963.28 × 57,216.80
  4. Step 4: Simplify right side
    145,971.20x = 12,528,378,199.10
  5. Step 5: Solve for x
    x = 12,528,378,199.10/145,971.20
  6. Step 6: Final answer
    x = 85,827.74

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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.