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Finding the Fourth Proportional to 137,312.70, 205,969.05 and 58,400.70

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Solution

The fourth proportional to 137,312.70, 205,969.05 and 58,400.70 is: 87,601.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,312.70 : 205,969.05 = 58,400.70 : x
  2. Step 2: Convert to fraction form
    137,312.70/205,969.05 = 58,400.70/x
  3. Step 3: Cross multiply
    137,312.70x = 205,969.05 × 58,400.70
  4. Step 4: Simplify right side
    137,312.70x = 12,028,736,698.34
  5. Step 5: Solve for x
    x = 12,028,736,698.34/137,312.70
  6. Step 6: Final answer
    x = 87,601.05

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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.