Home / 103,985.29-143,499.70-56,238.64

Finding the Fourth Proportional to 103,985.29, 143,499.70 and 56,238.64

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Solution

The fourth proportional to 103,985.29, 143,499.70 and 56,238.64 is: 77,609.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,985.29 : 143,499.70 = 56,238.64 : x
  2. Step 2: Convert to fraction form
    103,985.29/143,499.70 = 56,238.64/x
  3. Step 3: Cross multiply
    103,985.29x = 143,499.70 × 56,238.64
  4. Step 4: Simplify right side
    103,985.29x = 8,070,227,802.67
  5. Step 5: Solve for x
    x = 8,070,227,802.67/103,985.29
  6. Step 6: Final answer
    x = 77,609.32

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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.