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Finding the Fourth Proportional to 147,655.40, 221,483.10 and 126,919.40

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Solution

The fourth proportional to 147,655.40, 221,483.10 and 126,919.40 is: 190,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,655.40 : 221,483.10 = 126,919.40 : x
  2. Step 2: Convert to fraction form
    147,655.40/221,483.10 = 126,919.40/x
  3. Step 3: Cross multiply
    147,655.40x = 221,483.10 × 126,919.40
  4. Step 4: Simplify right side
    147,655.40x = 28,110,502,162.14
  5. Step 5: Solve for x
    x = 28,110,502,162.14/147,655.40
  6. Step 6: Final answer
    x = 190,379.10

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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.