Home / 135,389.93-186,838.12-74,139.98

Finding the Fourth Proportional to 135,389.93, 186,838.12 and 74,139.98

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Solution

The fourth proportional to 135,389.93, 186,838.12 and 74,139.98 is: 102,313.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,389.93 : 186,838.12 = 74,139.98 : x
  2. Step 2: Convert to fraction form
    135,389.93/186,838.12 = 74,139.98/x
  3. Step 3: Cross multiply
    135,389.93x = 186,838.12 × 74,139.98
  4. Step 4: Simplify right side
    135,389.93x = 13,852,175,006.45
  5. Step 5: Solve for x
    x = 13,852,175,006.45/135,389.93
  6. Step 6: Final answer
    x = 102,313.18

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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.