Home / 158,905.47-219,235.24-90,897.67

Finding the Fourth Proportional to 158,905.47, 219,235.24 and 90,897.67

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Solution

The fourth proportional to 158,905.47, 219,235.24 and 90,897.67 is: 125,407.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,905.47 : 219,235.24 = 90,897.67 : x
  2. Step 2: Convert to fraction form
    158,905.47/219,235.24 = 90,897.67/x
  3. Step 3: Cross multiply
    158,905.47x = 219,235.24 × 90,897.67
  4. Step 4: Simplify right side
    158,905.47x = 19,927,972,497.89
  5. Step 5: Solve for x
    x = 19,927,972,497.89/158,905.47
  6. Step 6: Final answer
    x = 125,407.72

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1.5x scale

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.