Home / 109,538.30-164,307.45-42,980.60

Finding the Fourth Proportional to 109,538.30, 164,307.45 and 42,980.60

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Solution

The fourth proportional to 109,538.30, 164,307.45 and 42,980.60 is: 64,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,538.30 : 164,307.45 = 42,980.60 : x
  2. Step 2: Convert to fraction form
    109,538.30/164,307.45 = 42,980.60/x
  3. Step 3: Cross multiply
    109,538.30x = 164,307.45 × 42,980.60
  4. Step 4: Simplify right side
    109,538.30x = 7,062,032,785.47
  5. Step 5: Solve for x
    x = 7,062,032,785.47/109,538.30
  6. Step 6: Final answer
    x = 64,470.90

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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.