Home / 147,653.10-221,479.65-138,905.10

Finding the Fourth Proportional to 147,653.10, 221,479.65 and 138,905.10

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Solution

The fourth proportional to 147,653.10, 221,479.65 and 138,905.10 is: 208,357.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,653.10 : 221,479.65 = 138,905.10 : x
  2. Step 2: Convert to fraction form
    147,653.10/221,479.65 = 138,905.10/x
  3. Step 3: Cross multiply
    147,653.10x = 221,479.65 × 138,905.10
  4. Step 4: Simplify right side
    147,653.10x = 30,764,652,931.22
  5. Step 5: Solve for x
    x = 30,764,652,931.22/147,653.10
  6. Step 6: Final answer
    x = 208,357.65

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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.