Home / 109,386.40-164,079.60-47,178.40

Finding the Fourth Proportional to 109,386.40, 164,079.60 and 47,178.40

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Solution

The fourth proportional to 109,386.40, 164,079.60 and 47,178.40 is: 70,767.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,386.40 : 164,079.60 = 47,178.40 : x
  2. Step 2: Convert to fraction form
    109,386.40/164,079.60 = 47,178.40/x
  3. Step 3: Cross multiply
    109,386.40x = 164,079.60 × 47,178.40
  4. Step 4: Simplify right side
    109,386.40x = 7,741,013,000.64
  5. Step 5: Solve for x
    x = 7,741,013,000.64/109,386.40
  6. Step 6: Final answer
    x = 70,767.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.