Home / 147,789.15-203,875.95-87,330.54

Finding the Fourth Proportional to 147,789.15, 203,875.95 and 87,330.54

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Solution

The fourth proportional to 147,789.15, 203,875.95 and 87,330.54 is: 120,472.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,789.15 : 203,875.95 = 87,330.54 : x
  2. Step 2: Convert to fraction form
    147,789.15/203,875.95 = 87,330.54/x
  3. Step 3: Cross multiply
    147,789.15x = 203,875.95 × 87,330.54
  4. Step 4: Simplify right side
    147,789.15x = 17,804,596,806.51
  5. Step 5: Solve for x
    x = 17,804,596,806.51/147,789.15
  6. Step 6: Final answer
    x = 120,472.96

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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.