Home / 102,478.57-152,699.07-91,299.35

Finding the Fourth Proportional to 102,478.57, 152,699.07 and 91,299.35

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Solution

The fourth proportional to 102,478.57, 152,699.07 and 91,299.35 is: 136,041.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,478.57 : 152,699.07 = 91,299.35 : x
  2. Step 2: Convert to fraction form
    102,478.57/152,699.07 = 91,299.35/x
  3. Step 3: Cross multiply
    102,478.57x = 152,699.07 × 91,299.35
  4. Step 4: Simplify right side
    102,478.57x = 13,941,326,560.72
  5. Step 5: Solve for x
    x = 13,941,326,560.72/102,478.57
  6. Step 6: Final answer
    x = 136,041.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.