Home / 109,145.60-163,308.80-99,315.20

Finding the Fourth Proportional to 109,145.60, 163,308.80 and 99,315.20

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Solution

The fourth proportional to 109,145.60, 163,308.80 and 99,315.20 is: 148,600.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,145.60 : 163,308.80 = 99,315.20 : x
  2. Step 2: Convert to fraction form
    109,145.60/163,308.80 = 99,315.20/x
  3. Step 3: Cross multiply
    109,145.60x = 163,308.80 × 99,315.20
  4. Step 4: Simplify right side
    109,145.60x = 16,219,046,133.76
  5. Step 5: Solve for x
    x = 16,219,046,133.76/109,145.60
  6. Step 6: Final answer
    x = 148,600.09

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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.