Home / 144,688.32-216,762.75-85,347.72

Finding the Fourth Proportional to 144,688.32, 216,762.75 and 85,347.72

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Solution

The fourth proportional to 144,688.32, 216,762.75 and 85,347.72 is: 127,862.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,688.32 : 216,762.75 = 85,347.72 : x
  2. Step 2: Convert to fraction form
    144,688.32/216,762.75 = 85,347.72/x
  3. Step 3: Cross multiply
    144,688.32x = 216,762.75 × 85,347.72
  4. Step 4: Simplify right side
    144,688.32x = 18,500,206,493.43
  5. Step 5: Solve for x
    x = 18,500,206,493.43/144,688.32
  6. Step 6: Final answer
    x = 127,862.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.