Home / 118,125.36-163,013.76-70,380.72

Finding the Fourth Proportional to 118,125.36, 163,013.76 and 70,380.72

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Solution

The fourth proportional to 118,125.36, 163,013.76 and 70,380.72 is: 97,125.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,125.36 : 163,013.76 = 70,380.72 : x
  2. Step 2: Convert to fraction form
    118,125.36/163,013.76 = 70,380.72/x
  3. Step 3: Cross multiply
    118,125.36x = 163,013.76 × 70,380.72
  4. Step 4: Simplify right side
    118,125.36x = 11,473,025,798.71
  5. Step 5: Solve for x
    x = 11,473,025,798.71/118,125.36
  6. Step 6: Final answer
    x = 97,125.85

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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.