Home / 135,030.57-186,345.95-74,605.11

Finding the Fourth Proportional to 135,030.57, 186,345.95 and 74,605.11

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Solution

The fourth proportional to 135,030.57, 186,345.95 and 74,605.11 is: 102,957.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,030.57 : 186,345.95 = 74,605.11 : x
  2. Step 2: Convert to fraction form
    135,030.57/186,345.95 = 74,605.11/x
  3. Step 3: Cross multiply
    135,030.57x = 186,345.95 × 74,605.11
  4. Step 4: Simplify right side
    135,030.57x = 13,902,360,097.80
  5. Step 5: Solve for x
    x = 13,902,360,097.80/135,030.57
  6. Step 6: Final answer
    x = 102,957.13

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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.