Home / 145,605.04-200,901.72-81,919.60

Finding the Fourth Proportional to 145,605.04, 200,901.72 and 81,919.60

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Solution

The fourth proportional to 145,605.04, 200,901.72 and 81,919.60 is: 113,030.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,605.04 : 200,901.72 = 81,919.60 : x
  2. Step 2: Convert to fraction form
    145,605.04/200,901.72 = 81,919.60/x
  3. Step 3: Cross multiply
    145,605.04x = 200,901.72 × 81,919.60
  4. Step 4: Simplify right side
    145,605.04x = 16,457,788,541.71
  5. Step 5: Solve for x
    x = 16,457,788,541.71/145,605.04
  6. Step 6: Final answer
    x = 113,030.35

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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.