Home / 154,655.13-213,424.08-87,587.13

Finding the Fourth Proportional to 154,655.13, 213,424.08 and 87,587.13

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Solution

The fourth proportional to 154,655.13, 213,424.08 and 87,587.13 is: 120,870.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,655.13 : 213,424.08 = 87,587.13 : x
  2. Step 2: Convert to fraction form
    154,655.13/213,424.08 = 87,587.13/x
  3. Step 3: Cross multiply
    154,655.13x = 213,424.08 × 87,587.13
  4. Step 4: Simplify right side
    154,655.13x = 18,693,202,640.09
  5. Step 5: Solve for x
    x = 18,693,202,640.09/154,655.13
  6. Step 6: Final answer
    x = 120,870.24

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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.