Home / 153,787.04-212,228.88-90,170.72

Finding the Fourth Proportional to 153,787.04, 212,228.88 and 90,170.72

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Solution

The fourth proportional to 153,787.04, 212,228.88 and 90,170.72 is: 124,437.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,787.04 : 212,228.88 = 90,170.72 : x
  2. Step 2: Convert to fraction form
    153,787.04/212,228.88 = 90,170.72/x
  3. Step 3: Cross multiply
    153,787.04x = 212,228.88 × 90,170.72
  4. Step 4: Simplify right side
    153,787.04x = 19,136,830,914.39
  5. Step 5: Solve for x
    x = 19,136,830,914.39/153,787.04
  6. Step 6: Final answer
    x = 124,437.21

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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.