Home / 109,688.93-151,344.70-63,721.23

Finding the Fourth Proportional to 109,688.93, 151,344.70 and 63,721.23

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Solution

The fourth proportional to 109,688.93, 151,344.70 and 63,721.23 is: 87,920.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,688.93 : 151,344.70 = 63,721.23 : x
  2. Step 2: Convert to fraction form
    109,688.93/151,344.70 = 63,721.23/x
  3. Step 3: Cross multiply
    109,688.93x = 151,344.70 × 63,721.23
  4. Step 4: Simplify right side
    109,688.93x = 9,643,870,437.98
  5. Step 5: Solve for x
    x = 9,643,870,437.98/109,688.93
  6. Step 6: Final answer
    x = 87,920.18

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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.