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Finding the Fourth Proportional to 157,088.21, 216,783.95 and 85,468.28

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Solution

The fourth proportional to 157,088.21, 216,783.95 and 85,468.28 is: 117,947.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,088.21 : 216,783.95 = 85,468.28 : x
  2. Step 2: Convert to fraction form
    157,088.21/216,783.95 = 85,468.28/x
  3. Step 3: Cross multiply
    157,088.21x = 216,783.95 × 85,468.28
  4. Step 4: Simplify right side
    157,088.21x = 18,528,149,826.84
  5. Step 5: Solve for x
    x = 18,528,149,826.84/157,088.21
  6. Step 6: Final answer
    x = 117,947.43

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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.