Home / 103,985.07-143,499.40-56,238.40

Finding the Fourth Proportional to 103,985.07, 143,499.40 and 56,238.40

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Solution

The fourth proportional to 103,985.07, 143,499.40 and 56,238.40 is: 77,609.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,985.07 : 143,499.40 = 56,238.40 : x
  2. Step 2: Convert to fraction form
    103,985.07/143,499.40 = 56,238.40/x
  3. Step 3: Cross multiply
    103,985.07x = 143,499.40 × 56,238.40
  4. Step 4: Simplify right side
    103,985.07x = 8,070,176,695.74
  5. Step 5: Solve for x
    x = 8,070,176,695.74/103,985.07
  6. Step 6: Final answer
    x = 77,609.00

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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.