Home / 211,681.32-292,143.36-135,270.76

Finding the Fourth Proportional to 211,681.32, 292,143.36 and 135,270.76

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Solution

The fourth proportional to 211,681.32, 292,143.36 and 135,270.76 is: 186,688.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,681.32 : 292,143.36 = 135,270.76 : x
  2. Step 2: Convert to fraction form
    211,681.32/292,143.36 = 135,270.76/x
  3. Step 3: Cross multiply
    211,681.32x = 292,143.36 × 135,270.76
  4. Step 4: Simplify right side
    211,681.32x = 39,518,454,336.15
  5. Step 5: Solve for x
    x = 39,518,454,336.15/211,681.32
  6. Step 6: Final answer
    x = 186,688.43

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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.