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Finding the Fourth Proportional to 153,378.79, 211,700.03 and 88,837.63

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Solution

The fourth proportional to 153,378.79, 211,700.03 and 88,837.63 is: 122,617.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,378.79 : 211,700.03 = 88,837.63 : x
  2. Step 2: Convert to fraction form
    153,378.79/211,700.03 = 88,837.63/x
  3. Step 3: Cross multiply
    153,378.79x = 211,700.03 × 88,837.63
  4. Step 4: Simplify right side
    153,378.79x = 18,806,927,962.69
  5. Step 5: Solve for x
    x = 18,806,927,962.69/153,378.79
  6. Step 6: Final answer
    x = 122,617.53

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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.