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Finding the Fourth Proportional to 87,651.40, 131,477.10 and 70,155.40

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Solution

The fourth proportional to 87,651.40, 131,477.10 and 70,155.40 is: 105,233.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,651.40 : 131,477.10 = 70,155.40 : x
  2. Step 2: Convert to fraction form
    87,651.40/131,477.10 = 70,155.40/x
  3. Step 3: Cross multiply
    87,651.40x = 131,477.10 × 70,155.40
  4. Step 4: Simplify right side
    87,651.40x = 9,223,828,541.34
  5. Step 5: Solve for x
    x = 9,223,828,541.34/87,651.40
  6. Step 6: Final answer
    x = 105,233.10

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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.