Home / 155,030.36-213,916.14-91,359.50

Finding the Fourth Proportional to 155,030.36, 213,916.14 and 91,359.50

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Solution

The fourth proportional to 155,030.36, 213,916.14 and 91,359.50 is: 126,060.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,030.36 : 213,916.14 = 91,359.50 : x
  2. Step 2: Convert to fraction form
    155,030.36/213,916.14 = 91,359.50/x
  3. Step 3: Cross multiply
    155,030.36x = 213,916.14 × 91,359.50
  4. Step 4: Simplify right side
    155,030.36x = 19,543,270,522.75
  5. Step 5: Solve for x
    x = 19,543,270,522.75/155,030.36
  6. Step 6: Final answer
    x = 126,060.93

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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.