Home / 145,816.48-201,226.08-81,284.86

Finding the Fourth Proportional to 145,816.48, 201,226.08 and 81,284.86

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Solution

The fourth proportional to 145,816.48, 201,226.08 and 81,284.86 is: 112,172.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,816.48 : 201,226.08 = 81,284.86 : x
  2. Step 2: Convert to fraction form
    145,816.48/201,226.08 = 81,284.86/x
  3. Step 3: Cross multiply
    145,816.48x = 201,226.08 × 81,284.86
  4. Step 4: Simplify right side
    145,816.48x = 16,356,633,741.15
  5. Step 5: Solve for x
    x = 16,356,633,741.15/145,816.48
  6. Step 6: Final answer
    x = 112,172.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.