Home / 143,381,642.40-215,072,463.60-47,643,530.40

Finding the Fourth Proportional to 143,381,642.40, 215,072,463.60 and 47,643,530.40

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Solution

The fourth proportional to 143,381,642.40, 215,072,463.60 and 47,643,530.40 is: 71,465,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,381,642.40 : 215,072,463.60 = 47,643,530.40 : x
  2. Step 2: Convert to fraction form
    143,381,642.40/215,072,463.60 = 47,643,530.40/x
  3. Step 3: Cross multiply
    143,381,642.40x = 215,072,463.60 × 47,643,530.40
  4. Step 4: Simplify right side
    143,381,642.40x = 10,246,811,457,729,492
  5. Step 5: Solve for x
    x = 10,246,811,457,729,492/143,381,642.40
  6. Step 6: Final answer
    x = 71,465,295.60

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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.