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Finding the Fourth Proportional to 152,465.88, 210,418.47 and 87,937.62

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Solution

The fourth proportional to 152,465.88, 210,418.47 and 87,937.62 is: 121,362.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,465.88 : 210,418.47 = 87,937.62 : x
  2. Step 2: Convert to fraction form
    152,465.88/210,418.47 = 87,937.62/x
  3. Step 3: Cross multiply
    152,465.88x = 210,418.47 × 87,937.62
  4. Step 4: Simplify right side
    152,465.88x = 18,503,699,455.84
  5. Step 5: Solve for x
    x = 18,503,699,455.84/152,465.88
  6. Step 6: Final answer
    x = 121,362.89

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1.5x scale

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.