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Finding the Fourth Proportional to 152,520, 210,477.60 and 92,904

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Solution

The fourth proportional to 152,520, 210,477.60 and 92,904 is: 128,207.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,520 : 210,477.60 = 92,904 : x
  2. Step 2: Convert to fraction form
    152,520/210,477.60 = 92,904/x
  3. Step 3: Cross multiply
    152,520x = 210,477.60 × 92,904
  4. Step 4: Simplify right side
    152,520x = 19,554,210,950.40
  5. Step 5: Solve for x
    x = 19,554,210,950.40/152,520
  6. Step 6: Final answer
    x = 128,207.52

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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.