Home / 152,421.40-228,632.10-131,426.20

Finding the Fourth Proportional to 152,421.40, 228,632.10 and 131,426.20

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Solution

The fourth proportional to 152,421.40, 228,632.10 and 131,426.20 is: 197,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,421.40 : 228,632.10 = 131,426.20 : x
  2. Step 2: Convert to fraction form
    152,421.40/228,632.10 = 131,426.20/x
  3. Step 3: Cross multiply
    152,421.40x = 228,632.10 × 131,426.20
  4. Step 4: Simplify right side
    152,421.40x = 30,048,248,101.02
  5. Step 5: Solve for x
    x = 30,048,248,101.02/152,421.40
  6. Step 6: Final answer
    x = 197,139.30

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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.