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Finding the Fourth Proportional to 128,058.57, 176,730.53 and 70,708.82

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Solution

The fourth proportional to 128,058.57, 176,730.53 and 70,708.82 is: 97,583.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,058.57 : 176,730.53 = 70,708.82 : x
  2. Step 2: Convert to fraction form
    128,058.57/176,730.53 = 70,708.82/x
  3. Step 3: Cross multiply
    128,058.57x = 176,730.53 × 70,708.82
  4. Step 4: Simplify right side
    128,058.57x = 12,496,405,997.08
  5. Step 5: Solve for x
    x = 12,496,405,997.08/128,058.57
  6. Step 6: Final answer
    x = 97,583.52

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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.