Home / 102,011.40-153,017.10-90,930.60

Finding the Fourth Proportional to 102,011.40, 153,017.10 and 90,930.60

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Solution

The fourth proportional to 102,011.40, 153,017.10 and 90,930.60 is: 136,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,011.40 : 153,017.10 = 90,930.60 : x
  2. Step 2: Convert to fraction form
    102,011.40/153,017.10 = 90,930.60/x
  3. Step 3: Cross multiply
    102,011.40x = 153,017.10 × 90,930.60
  4. Step 4: Simplify right side
    102,011.40x = 13,913,936,713.26
  5. Step 5: Solve for x
    x = 13,913,936,713.26/102,011.40
  6. Step 6: Final answer
    x = 136,395.90

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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.