Home / 120,980.60-181,427.70-42,097.40

Finding the Fourth Proportional to 120,980.60, 181,427.70 and 42,097.40

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Solution

The fourth proportional to 120,980.60, 181,427.70 and 42,097.40 is: 63,131.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,980.60 : 181,427.70 = 42,097.40 : x
  2. Step 2: Convert to fraction form
    120,980.60/181,427.70 = 42,097.40/x
  3. Step 3: Cross multiply
    120,980.60x = 181,427.70 × 42,097.40
  4. Step 4: Simplify right side
    120,980.60x = 7,637,634,457.98
  5. Step 5: Solve for x
    x = 7,637,634,457.98/120,980.60
  6. Step 6: Final answer
    x = 63,131.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.