Home / 137,045,693.20-189,168,282.12-122,517,426.70

Finding the Fourth Proportional to 137,045,693.20, 189,168,282.12 and 122,517,426.70

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Solution

The fourth proportional to 137,045,693.20, 189,168,282.12 and 122,517,426.70 is: 169,114,479.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,045,693.20 : 189,168,282.12 = 122,517,426.70 : x
  2. Step 2: Convert to fraction form
    137,045,693.20/189,168,282.12 = 122,517,426.70/x
  3. Step 3: Cross multiply
    137,045,693.20x = 189,168,282.12 × 122,517,426.70
  4. Step 4: Simplify right side
    137,045,693.20x = 23,176,411,138,602,020
  5. Step 5: Solve for x
    x = 23,176,411,138,602,020/137,045,693.20
  6. Step 6: Final answer
    x = 169,114,479.98

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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.