Home / 109,639.92-151,307.01-61,901.76

Finding the Fourth Proportional to 109,639.92, 151,307.01 and 61,901.76

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Solution

The fourth proportional to 109,639.92, 151,307.01 and 61,901.76 is: 85,426.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,639.92 : 151,307.01 = 61,901.76 : x
  2. Step 2: Convert to fraction form
    109,639.92/151,307.01 = 61,901.76/x
  3. Step 3: Cross multiply
    109,639.92x = 151,307.01 × 61,901.76
  4. Step 4: Simplify right side
    109,639.92x = 9,366,170,219.34
  5. Step 5: Solve for x
    x = 9,366,170,219.34/109,639.92
  6. Step 6: Final answer
    x = 85,426.64

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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.