Home / 136,966.61-189,032.72-78,822.16

Finding the Fourth Proportional to 136,966.61, 189,032.72 and 78,822.16

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Solution

The fourth proportional to 136,966.61, 189,032.72 and 78,822.16 is: 108,785.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,966.61 : 189,032.72 = 78,822.16 : x
  2. Step 2: Convert to fraction form
    136,966.61/189,032.72 = 78,822.16/x
  3. Step 3: Cross multiply
    136,966.61x = 189,032.72 × 78,822.16
  4. Step 4: Simplify right side
    136,966.61x = 14,899,966,434.38
  5. Step 5: Solve for x
    x = 14,899,966,434.38/136,966.61
  6. Step 6: Final answer
    x = 108,785.39

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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.