Home / 103,581.34-142,953.20-63,318.66

Finding the Fourth Proportional to 103,581.34, 142,953.20 and 63,318.66

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Solution

The fourth proportional to 103,581.34, 142,953.20 and 63,318.66 is: 87,386.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,581.34 : 142,953.20 = 63,318.66 : x
  2. Step 2: Convert to fraction form
    103,581.34/142,953.20 = 63,318.66/x
  3. Step 3: Cross multiply
    103,581.34x = 142,953.20 × 63,318.66
  4. Step 4: Simplify right side
    103,581.34x = 9,051,605,066.71
  5. Step 5: Solve for x
    x = 9,051,605,066.71/103,581.34
  6. Step 6: Final answer
    x = 87,386.44

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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.