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Finding the Fourth Proportional to 109,509.59, 151,122.95 and 61,111.01

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Solution

The fourth proportional to 109,509.59, 151,122.95 and 61,111.01 is: 84,333.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,509.59 : 151,122.95 = 61,111.01 : x
  2. Step 2: Convert to fraction form
    109,509.59/151,122.95 = 61,111.01/x
  3. Step 3: Cross multiply
    109,509.59x = 151,122.95 × 61,111.01
  4. Step 4: Simplify right side
    109,509.59x = 9,235,276,410.10
  5. Step 5: Solve for x
    x = 9,235,276,410.10/109,509.59
  6. Step 6: Final answer
    x = 84,333.04

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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.