Home / 130,522.59-180,117.68-76,810.78

Finding the Fourth Proportional to 130,522.59, 180,117.68 and 76,810.78

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Solution

The fourth proportional to 130,522.59, 180,117.68 and 76,810.78 is: 105,996.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,522.59 : 180,117.68 = 76,810.78 : x
  2. Step 2: Convert to fraction form
    130,522.59/180,117.68 = 76,810.78/x
  3. Step 3: Cross multiply
    130,522.59x = 180,117.68 × 76,810.78
  4. Step 4: Simplify right side
    130,522.59x = 13,834,979,333.68
  5. Step 5: Solve for x
    x = 13,834,979,333.68/130,522.59
  6. Step 6: Final answer
    x = 105,996.82

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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.