Home / 145,210.56-200,390.87-81,548.61

Finding the Fourth Proportional to 145,210.56, 200,390.87 and 81,548.61

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Solution

The fourth proportional to 145,210.56, 200,390.87 and 81,548.61 is: 112,537.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,210.56 : 200,390.87 = 81,548.61 : x
  2. Step 2: Convert to fraction form
    145,210.56/200,390.87 = 81,548.61/x
  3. Step 3: Cross multiply
    145,210.56x = 200,390.87 × 81,548.61
  4. Step 4: Simplify right side
    145,210.56x = 16,341,596,905.19
  5. Step 5: Solve for x
    x = 16,341,596,905.19/145,210.56
  6. Step 6: Final answer
    x = 112,537.25

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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.