Home / 157,219.31-216,966.50-85,603.23

Finding the Fourth Proportional to 157,219.31, 216,966.50 and 85,603.23

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Solution

The fourth proportional to 157,219.31, 216,966.50 and 85,603.23 is: 118,134.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,219.31 : 216,966.50 = 85,603.23 : x
  2. Step 2: Convert to fraction form
    157,219.31/216,966.50 = 85,603.23/x
  3. Step 3: Cross multiply
    157,219.31x = 216,966.50 × 85,603.23
  4. Step 4: Simplify right side
    157,219.31x = 18,573,033,094.79
  5. Step 5: Solve for x
    x = 18,573,033,094.79/157,219.31
  6. Step 6: Final answer
    x = 118,134.55

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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.