Home / 130,527.05-180,123.08-76,815

Finding the Fourth Proportional to 130,527.05, 180,123.08 and 76,815

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Solution

The fourth proportional to 130,527.05, 180,123.08 and 76,815 is: 106,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,527.05 : 180,123.08 = 76,815 : x
  2. Step 2: Convert to fraction form
    130,527.05/180,123.08 = 76,815/x
  3. Step 3: Cross multiply
    130,527.05x = 180,123.08 × 76,815
  4. Step 4: Simplify right side
    130,527.05x = 13,836,154,006.13
  5. Step 5: Solve for x
    x = 13,836,154,006.13/130,527.05
  6. Step 6: Final answer
    x = 106,002.20

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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.