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Finding the Fourth Proportional to 100,622.40, 151,030.80 and 61,256.40

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Solution

The fourth proportional to 100,622.40, 151,030.80 and 61,256.40 is: 91,943.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,622.40 : 151,030.80 = 61,256.40 : x
  2. Step 2: Convert to fraction form
    100,622.40/151,030.80 = 61,256.40/x
  3. Step 3: Cross multiply
    100,622.40x = 151,030.80 × 61,256.40
  4. Step 4: Simplify right side
    100,622.40x = 9,251,603,097.12
  5. Step 5: Solve for x
    x = 9,251,603,097.12/100,622.40
  6. Step 6: Final answer
    x = 91,943.77

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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.