Home / 143,088.05-197,421.50-89,427.58

Finding the Fourth Proportional to 143,088.05, 197,421.50 and 89,427.58

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Solution

The fourth proportional to 143,088.05, 197,421.50 and 89,427.58 is: 123,385.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,088.05 : 197,421.50 = 89,427.58 : x
  2. Step 2: Convert to fraction form
    143,088.05/197,421.50 = 89,427.58/x
  3. Step 3: Cross multiply
    143,088.05x = 197,421.50 × 89,427.58
  4. Step 4: Simplify right side
    143,088.05x = 17,654,926,714.99
  5. Step 5: Solve for x
    x = 17,654,926,714.99/143,088.05
  6. Step 6: Final answer
    x = 123,385.05

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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.