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Finding the Fourth Proportional to 104,030.40, 156,045.60 and 99,656.40

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Solution

The fourth proportional to 104,030.40, 156,045.60 and 99,656.40 is: 149,484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,030.40 : 156,045.60 = 99,656.40 : x
  2. Step 2: Convert to fraction form
    104,030.40/156,045.60 = 99,656.40/x
  3. Step 3: Cross multiply
    104,030.40x = 156,045.60 × 99,656.40
  4. Step 4: Simplify right side
    104,030.40x = 15,550,942,731.84
  5. Step 5: Solve for x
    x = 15,550,942,731.84/104,030.40
  6. Step 6: Final answer
    x = 149,484.60

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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.