Home / 103,384.50-142,602.57-74,656.32

Finding the Fourth Proportional to 103,384.50, 142,602.57 and 74,656.32

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Solution

The fourth proportional to 103,384.50, 142,602.57 and 74,656.32 is: 102,976.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,384.50 : 142,602.57 = 74,656.32 : x
  2. Step 2: Convert to fraction form
    103,384.50/142,602.57 = 74,656.32/x
  3. Step 3: Cross multiply
    103,384.50x = 142,602.57 × 74,656.32
  4. Step 4: Simplify right side
    103,384.50x = 10,646,183,098.74
  5. Step 5: Solve for x
    x = 10,646,183,098.74/103,384.50
  6. Step 6: Final answer
    x = 102,976.59

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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.