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Finding the Fourth Proportional to 125,643.84, 173,210.04 and 99,924.72

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Solution

The fourth proportional to 125,643.84, 173,210.04 and 99,924.72 is: 137,754.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,643.84 : 173,210.04 = 99,924.72 : x
  2. Step 2: Convert to fraction form
    125,643.84/173,210.04 = 99,924.72/x
  3. Step 3: Cross multiply
    125,643.84x = 173,210.04 × 99,924.72
  4. Step 4: Simplify right side
    125,643.84x = 17,307,964,748.19
  5. Step 5: Solve for x
    x = 17,307,964,748.19/125,643.84
  6. Step 6: Final answer
    x = 137,754.18

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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.