Home / 102,001.80-153,002.70-72,258.60

Finding the Fourth Proportional to 102,001.80, 153,002.70 and 72,258.60

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Solution

The fourth proportional to 102,001.80, 153,002.70 and 72,258.60 is: 108,387.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,001.80 : 153,002.70 = 72,258.60 : x
  2. Step 2: Convert to fraction form
    102,001.80/153,002.70 = 72,258.60/x
  3. Step 3: Cross multiply
    102,001.80x = 153,002.70 × 72,258.60
  4. Step 4: Simplify right side
    102,001.80x = 11,055,760,898.22
  5. Step 5: Solve for x
    x = 11,055,760,898.22/102,001.80
  6. Step 6: Final answer
    x = 108,387.90

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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.