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Finding the Fourth Proportional to 157,440, 236,160 and 40,704

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Solution

The fourth proportional to 157,440, 236,160 and 40,704 is: 61,056

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,440 : 236,160 = 40,704 : x
  2. Step 2: Convert to fraction form
    157,440/236,160 = 40,704/x
  3. Step 3: Cross multiply
    157,440x = 236,160 × 40,704
  4. Step 4: Simplify right side
    157,440x = 9,612,656,640
  5. Step 5: Solve for x
    x = 9,612,656,640/157,440
  6. Step 6: Final answer
    x = 61,056

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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.