Home / 145,030.86-200,141.74-81,368.50

Finding the Fourth Proportional to 145,030.86, 200,141.74 and 81,368.50

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Solution

The fourth proportional to 145,030.86, 200,141.74 and 81,368.50 is: 112,288.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,030.86 : 200,141.74 = 81,368.50 : x
  2. Step 2: Convert to fraction form
    145,030.86/200,141.74 = 81,368.50/x
  3. Step 3: Cross multiply
    145,030.86x = 200,141.74 × 81,368.50
  4. Step 4: Simplify right side
    145,030.86x = 16,285,233,171.19
  5. Step 5: Solve for x
    x = 16,285,233,171.19/145,030.86
  6. Step 6: Final answer
    x = 112,288.05

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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.