Home / 154,359.09-212,947.95-90,668.19

Finding the Fourth Proportional to 154,359.09, 212,947.95 and 90,668.19

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Solution

The fourth proportional to 154,359.09, 212,947.95 and 90,668.19 is: 125,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,359.09 : 212,947.95 = 90,668.19 : x
  2. Step 2: Convert to fraction form
    154,359.09/212,947.95 = 90,668.19/x
  3. Step 3: Cross multiply
    154,359.09x = 212,947.95 × 90,668.19
  4. Step 4: Simplify right side
    154,359.09x = 19,307,605,190.71
  5. Step 5: Solve for x
    x = 19,307,605,190.71/154,359.09
  6. Step 6: Final answer
    x = 125,082.40

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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.