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Finding the Fourth Proportional to 158,984,602.40, 238,476,903.60 and 86,236,234.40

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Solution

The fourth proportional to 158,984,602.40, 238,476,903.60 and 86,236,234.40 is: 129,354,351.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,984,602.40 : 238,476,903.60 = 86,236,234.40 : x
  2. Step 2: Convert to fraction form
    158,984,602.40/238,476,903.60 = 86,236,234.40/x
  3. Step 3: Cross multiply
    158,984,602.40x = 238,476,903.60 × 86,236,234.40
  4. Step 4: Simplify right side
    158,984,602.40x = 20,565,350,157,835,804
  5. Step 5: Solve for x
    x = 20,565,350,157,835,804/158,984,602.40
  6. Step 6: Final answer
    x = 129,354,351.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.