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Finding the Fourth Proportional to 109,730.57, 151,440.53 and 61,987.01

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Solution

The fourth proportional to 109,730.57, 151,440.53 and 61,987.01 is: 85,549.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,730.57 : 151,440.53 = 61,987.01 : x
  2. Step 2: Convert to fraction form
    109,730.57/151,440.53 = 61,987.01/x
  3. Step 3: Cross multiply
    109,730.57x = 151,440.53 × 61,987.01
  4. Step 4: Simplify right side
    109,730.57x = 9,387,345,716.18
  5. Step 5: Solve for x
    x = 9,387,345,716.18/109,730.57
  6. Step 6: Final answer
    x = 85,549.05

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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.