Home / 130,974.76-180,748.02-77,272.84

Finding the Fourth Proportional to 130,974.76, 180,748.02 and 77,272.84

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Solution

The fourth proportional to 130,974.76, 180,748.02 and 77,272.84 is: 106,638.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,974.76 : 180,748.02 = 77,272.84 : x
  2. Step 2: Convert to fraction form
    130,974.76/180,748.02 = 77,272.84/x
  3. Step 3: Cross multiply
    130,974.76x = 180,748.02 × 77,272.84
  4. Step 4: Simplify right side
    130,974.76x = 13,966,912,829.78
  5. Step 5: Solve for x
    x = 13,966,912,829.78/130,974.76
  6. Step 6: Final answer
    x = 106,638.20

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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.