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Finding the Fourth Proportional to 157,603.17, 217,510.52 and 87,759.50

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Solution

The fourth proportional to 157,603.17, 217,510.52 and 87,759.50 is: 121,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,603.17 : 217,510.52 = 87,759.50 : x
  2. Step 2: Convert to fraction form
    157,603.17/217,510.52 = 87,759.50/x
  3. Step 3: Cross multiply
    157,603.17x = 217,510.52 × 87,759.50
  4. Step 4: Simplify right side
    157,603.17x = 19,088,614,177.09
  5. Step 5: Solve for x
    x = 19,088,614,177.09/157,603.17
  6. Step 6: Final answer
    x = 121,118.21

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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.