Home / 153,784.53-212,222.88-90,122.40

Finding the Fourth Proportional to 153,784.53, 212,222.88 and 90,122.40

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Solution

The fourth proportional to 153,784.53, 212,222.88 and 90,122.40 is: 124,369.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,784.53 : 212,222.88 = 90,122.40 : x
  2. Step 2: Convert to fraction form
    153,784.53/212,222.88 = 90,122.40/x
  3. Step 3: Cross multiply
    153,784.53x = 212,222.88 × 90,122.40
  4. Step 4: Simplify right side
    153,784.53x = 19,126,035,280.51
  5. Step 5: Solve for x
    x = 19,126,035,280.51/153,784.53
  6. Step 6: Final answer
    x = 124,369.05

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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.