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Finding the Fourth Proportional to 109,688.68, 151,370.85 and 59,387.68

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Solution

The fourth proportional to 109,688.68, 151,370.85 and 59,387.68 is: 81,955.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,688.68 : 151,370.85 = 59,387.68 : x
  2. Step 2: Convert to fraction form
    109,688.68/151,370.85 = 59,387.68/x
  3. Step 3: Cross multiply
    109,688.68x = 151,370.85 × 59,387.68
  4. Step 4: Simplify right side
    109,688.68x = 8,989,563,601.13
  5. Step 5: Solve for x
    x = 8,989,563,601.13/109,688.68
  6. Step 6: Final answer
    x = 81,955.25

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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.