Home / 155,117.76-213,615-148,031.88

Finding the Fourth Proportional to 155,117.76, 213,615 and 148,031.88

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Solution

The fourth proportional to 155,117.76, 213,615 and 148,031.88 is: 203,856.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,117.76 : 213,615 = 148,031.88 : x
  2. Step 2: Convert to fraction form
    155,117.76/213,615 = 148,031.88/x
  3. Step 3: Cross multiply
    155,117.76x = 213,615 × 148,031.88
  4. Step 4: Simplify right side
    155,117.76x = 31,621,830,046.20
  5. Step 5: Solve for x
    x = 31,621,830,046.20/155,117.76
  6. Step 6: Final answer
    x = 203,856.93

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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.