Home / 109,730.16-151,425-61,981.92

Finding the Fourth Proportional to 109,730.16, 151,425 and 61,981.92

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Solution

The fourth proportional to 109,730.16, 151,425 and 61,981.92 is: 85,533.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,730.16 : 151,425 = 61,981.92 : x
  2. Step 2: Convert to fraction form
    109,730.16/151,425 = 61,981.92/x
  3. Step 3: Cross multiply
    109,730.16x = 151,425 × 61,981.92
  4. Step 4: Simplify right side
    109,730.16x = 9,385,612,236
  5. Step 5: Solve for x
    x = 9,385,612,236/109,730.16
  6. Step 6: Final answer
    x = 85,533.57

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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.