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Finding the Fourth Proportional to 109,509.87, 151,123.41 and 61,763.07

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Solution

The fourth proportional to 109,509.87, 151,123.41 and 61,763.07 is: 85,232.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,509.87 : 151,123.41 = 61,763.07 : x
  2. Step 2: Convert to fraction form
    109,509.87/151,123.41 = 61,763.07/x
  3. Step 3: Cross multiply
    109,509.87x = 151,123.41 × 61,763.07
  4. Step 4: Simplify right side
    109,509.87x = 9,333,845,750.47
  5. Step 5: Solve for x
    x = 9,333,845,750.47/109,509.87
  6. Step 6: Final answer
    x = 85,232.92

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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.