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Finding the Fourth Proportional to 99,205.40, 148,808.10 and 91,602.20

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Solution

The fourth proportional to 99,205.40, 148,808.10 and 91,602.20 is: 137,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,205.40 : 148,808.10 = 91,602.20 : x
  2. Step 2: Convert to fraction form
    99,205.40/148,808.10 = 91,602.20/x
  3. Step 3: Cross multiply
    99,205.40x = 148,808.10 × 91,602.20
  4. Step 4: Simplify right side
    99,205.40x = 13,631,149,337.82
  5. Step 5: Solve for x
    x = 13,631,149,337.82/99,205.40
  6. Step 6: Final answer
    x = 137,403.30

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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.