Home / 127,520.68-191,242.12-102,501.40

Finding the Fourth Proportional to 127,520.68, 191,242.12 and 102,501.40

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Solution

The fourth proportional to 127,520.68, 191,242.12 and 102,501.40 is: 153,720.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,520.68 : 191,242.12 = 102,501.40 : x
  2. Step 2: Convert to fraction form
    127,520.68/191,242.12 = 102,501.40/x
  3. Step 3: Cross multiply
    127,520.68x = 191,242.12 × 102,501.40
  4. Step 4: Simplify right side
    127,520.68x = 19,602,585,038.97
  5. Step 5: Solve for x
    x = 19,602,585,038.97/127,520.68
  6. Step 6: Final answer
    x = 153,720.83

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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.