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Finding the Fourth Proportional to 101,421.60, 152,132.40 and 99,866.40

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Solution

The fourth proportional to 101,421.60, 152,132.40 and 99,866.40 is: 149,799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,421.60 : 152,132.40 = 99,866.40 : x
  2. Step 2: Convert to fraction form
    101,421.60/152,132.40 = 99,866.40/x
  3. Step 3: Cross multiply
    101,421.60x = 152,132.40 × 99,866.40
  4. Step 4: Simplify right side
    101,421.60x = 15,192,915,111.36
  5. Step 5: Solve for x
    x = 15,192,915,111.36/101,421.60
  6. Step 6: Final answer
    x = 149,799.60

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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.