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Finding the Fourth Proportional to 151,443.16, 208,984.08 and 87,801.64

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Solution

The fourth proportional to 151,443.16, 208,984.08 and 87,801.64 is: 121,161.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,443.16 : 208,984.08 = 87,801.64 : x
  2. Step 2: Convert to fraction form
    151,443.16/208,984.08 = 87,801.64/x
  3. Step 3: Cross multiply
    151,443.16x = 208,984.08 × 87,801.64
  4. Step 4: Simplify right side
    151,443.16x = 18,349,144,957.89
  5. Step 5: Solve for x
    x = 18,349,144,957.89/151,443.16
  6. Step 6: Final answer
    x = 121,161.93

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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.