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Finding the Fourth Proportional to 158,602.16, 218,877.28 and 86,984.76

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Solution

The fourth proportional to 158,602.16, 218,877.28 and 86,984.76 is: 120,042.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,602.16 : 218,877.28 = 86,984.76 : x
  2. Step 2: Convert to fraction form
    158,602.16/218,877.28 = 86,984.76/x
  3. Step 3: Cross multiply
    158,602.16x = 218,877.28 × 86,984.76
  4. Step 4: Simplify right side
    158,602.16x = 19,038,987,670.25
  5. Step 5: Solve for x
    x = 19,038,987,670.25/158,602.16
  6. Step 6: Final answer
    x = 120,042.42

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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.