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Finding the Fourth Proportional to 143,692,695.40, 215,675,309.40 and 88,939,657.84

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Solution

The fourth proportional to 143,692,695.40, 215,675,309.40 and 88,939,657.84 is: 133,493,829.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,692,695.40 : 215,675,309.40 = 88,939,657.84 : x
  2. Step 2: Convert to fraction form
    143,692,695.40/215,675,309.40 = 88,939,657.84/x
  3. Step 3: Cross multiply
    143,692,695.40x = 215,675,309.40 × 88,939,657.84
  4. Step 4: Simplify right side
    143,692,695.40x = 19,182,088,222,572,136
  5. Step 5: Solve for x
    x = 19,182,088,222,572,136/143,692,695.40
  6. Step 6: Final answer
    x = 133,493,829.80

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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.