Home / 186,316.62-257,417.55-129,979.50

Finding the Fourth Proportional to 186,316.62, 257,417.55 and 129,979.50

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Solution

The fourth proportional to 186,316.62, 257,417.55 and 129,979.50 is: 179,581.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,316.62 : 257,417.55 = 129,979.50 : x
  2. Step 2: Convert to fraction form
    186,316.62/257,417.55 = 129,979.50/x
  3. Step 3: Cross multiply
    186,316.62x = 257,417.55 × 129,979.50
  4. Step 4: Simplify right side
    186,316.62x = 33,459,004,440.23
  5. Step 5: Solve for x
    x = 33,459,004,440.23/186,316.62
  6. Step 6: Final answer
    x = 179,581.43

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1.5x scale

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.