Home / 105,105.60-157,658.40-89,359.20

Finding the Fourth Proportional to 105,105.60, 157,658.40 and 89,359.20

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Solution

The fourth proportional to 105,105.60, 157,658.40 and 89,359.20 is: 134,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,105.60 : 157,658.40 = 89,359.20 : x
  2. Step 2: Convert to fraction form
    105,105.60/157,658.40 = 89,359.20/x
  3. Step 3: Cross multiply
    105,105.60x = 157,658.40 × 89,359.20
  4. Step 4: Simplify right side
    105,105.60x = 14,088,228,497.28
  5. Step 5: Solve for x
    x = 14,088,228,497.28/105,105.60
  6. Step 6: Final answer
    x = 134,038.80

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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.