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Finding the Fourth Proportional to 99,390.60, 149,085.90 and 88,331.40

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Solution

The fourth proportional to 99,390.60, 149,085.90 and 88,331.40 is: 132,497.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,390.60 : 149,085.90 = 88,331.40 : x
  2. Step 2: Convert to fraction form
    99,390.60/149,085.90 = 88,331.40/x
  3. Step 3: Cross multiply
    99,390.60x = 149,085.90 × 88,331.40
  4. Step 4: Simplify right side
    99,390.60x = 13,168,966,267.26
  5. Step 5: Solve for x
    x = 13,168,966,267.26/99,390.60
  6. Step 6: Final answer
    x = 132,497.10

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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.