Home / 145,190.10-200,364.72-81,526.50

Finding the Fourth Proportional to 145,190.10, 200,364.72 and 81,526.50

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Solution

The fourth proportional to 145,190.10, 200,364.72 and 81,526.50 is: 112,507.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,190.10 : 200,364.72 = 81,526.50 : x
  2. Step 2: Convert to fraction form
    145,190.10/200,364.72 = 81,526.50/x
  3. Step 3: Cross multiply
    145,190.10x = 200,364.72 × 81,526.50
  4. Step 4: Simplify right side
    145,190.10x = 16,335,034,345.08
  5. Step 5: Solve for x
    x = 16,335,034,345.08/145,190.10
  6. Step 6: Final answer
    x = 112,507.91

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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.