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Finding the Fourth Proportional to 115,357.16, 159,203.81 and 70,024.70

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Solution

The fourth proportional to 115,357.16, 159,203.81 and 70,024.70 is: 96,640.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,357.16 : 159,203.81 = 70,024.70 : x
  2. Step 2: Convert to fraction form
    115,357.16/159,203.81 = 70,024.70/x
  3. Step 3: Cross multiply
    115,357.16x = 159,203.81 × 70,024.70
  4. Step 4: Simplify right side
    115,357.16x = 11,148,199,607.18
  5. Step 5: Solve for x
    x = 11,148,199,607.18/115,357.16
  6. Step 6: Final answer
    x = 96,640.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.