Home / 212,412.16-293,088.30-135,872.64

Finding the Fourth Proportional to 212,412.16, 293,088.30 and 135,872.64

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Solution

The fourth proportional to 212,412.16, 293,088.30 and 135,872.64 is: 187,478.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,412.16 : 293,088.30 = 135,872.64 : x
  2. Step 2: Convert to fraction form
    212,412.16/293,088.30 = 135,872.64/x
  3. Step 3: Cross multiply
    212,412.16x = 293,088.30 × 135,872.64
  4. Step 4: Simplify right side
    212,412.16x = 39,822,681,074.11
  5. Step 5: Solve for x
    x = 39,822,681,074.11/212,412.16
  6. Step 6: Final answer
    x = 187,478.35

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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.