Home / 116,516.10-174,428.55-77,117.70

Finding the Fourth Proportional to 116,516.10, 174,428.55 and 77,117.70

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Solution

The fourth proportional to 116,516.10, 174,428.55 and 77,117.70 is: 115,447.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,516.10 : 174,428.55 = 77,117.70 : x
  2. Step 2: Convert to fraction form
    116,516.10/174,428.55 = 77,117.70/x
  3. Step 3: Cross multiply
    116,516.10x = 174,428.55 × 77,117.70
  4. Step 4: Simplify right side
    116,516.10x = 13,451,528,590.34
  5. Step 5: Solve for x
    x = 13,451,528,590.34/116,516.10
  6. Step 6: Final answer
    x = 115,447.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.