Home / 154,244.10-231,038.10-128,000.10

Finding the Fourth Proportional to 154,244.10, 231,038.10 and 128,000.10

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Solution

The fourth proportional to 154,244.10, 231,038.10 and 128,000.10 is: 191,727.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,244.10 : 231,038.10 = 128,000.10 : x
  2. Step 2: Convert to fraction form
    154,244.10/231,038.10 = 128,000.10/x
  3. Step 3: Cross multiply
    154,244.10x = 231,038.10 × 128,000.10
  4. Step 4: Simplify right side
    154,244.10x = 29,572,899,903.81
  5. Step 5: Solve for x
    x = 29,572,899,903.81/154,244.10
  6. Step 6: Final answer
    x = 191,727.92

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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.