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Finding the Fourth Proportional to 157,486.55, 235,818.03 and 86,261.02

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Solution

The fourth proportional to 157,486.55, 235,818.03 and 86,261.02 is: 129,165.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,486.55 : 235,818.03 = 86,261.02 : x
  2. Step 2: Convert to fraction form
    157,486.55/235,818.03 = 86,261.02/x
  3. Step 3: Cross multiply
    157,486.55x = 235,818.03 × 86,261.02
  4. Step 4: Simplify right side
    157,486.55x = 20,341,903,802.19
  5. Step 5: Solve for x
    x = 20,341,903,802.19/157,486.55
  6. Step 6: Final answer
    x = 129,165.98

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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.