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Finding the Fourth Proportional to 125,113.68, 172,656.36 and 67,752.72

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Solution

The fourth proportional to 125,113.68, 172,656.36 and 67,752.72 is: 93,498.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,113.68 : 172,656.36 = 67,752.72 : x
  2. Step 2: Convert to fraction form
    125,113.68/172,656.36 = 67,752.72/x
  3. Step 3: Cross multiply
    125,113.68x = 172,656.36 × 67,752.72
  4. Step 4: Simplify right side
    125,113.68x = 11,697,938,015.30
  5. Step 5: Solve for x
    x = 11,697,938,015.30/125,113.68
  6. Step 6: Final answer
    x = 93,498.47

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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.