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Finding the Fourth Proportional to 99,557.80, 148,904.70 and 89,103.40

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Solution

The fourth proportional to 99,557.80, 148,904.70 and 89,103.40 is: 133,268.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,557.80 : 148,904.70 = 89,103.40 : x
  2. Step 2: Convert to fraction form
    99,557.80/148,904.70 = 89,103.40/x
  3. Step 3: Cross multiply
    99,557.80x = 148,904.70 × 89,103.40
  4. Step 4: Simplify right side
    99,557.80x = 13,267,915,045.98
  5. Step 5: Solve for x
    x = 13,267,915,045.98/99,557.80
  6. Step 6: Final answer
    x = 133,268.46

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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.