Home / 103,820.59-143,275.40-58,499.11

Finding the Fourth Proportional to 103,820.59, 143,275.40 and 58,499.11

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Solution

The fourth proportional to 103,820.59, 143,275.40 and 58,499.11 is: 80,730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,820.59 : 143,275.40 = 58,499.11 : x
  2. Step 2: Convert to fraction form
    103,820.59/143,275.40 = 58,499.11/x
  3. Step 3: Cross multiply
    103,820.59x = 143,275.40 × 58,499.11
  4. Step 4: Simplify right side
    103,820.59x = 8,381,483,384.89
  5. Step 5: Solve for x
    x = 8,381,483,384.89/103,820.59
  6. Step 6: Final answer
    x = 80,730.45

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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.