Home / 103,688.64-143,082.18-61,239.24

Finding the Fourth Proportional to 103,688.64, 143,082.18 and 61,239.24

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Solution

The fourth proportional to 103,688.64, 143,082.18 and 61,239.24 is: 84,505.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,688.64 : 143,082.18 = 61,239.24 : x
  2. Step 2: Convert to fraction form
    103,688.64/143,082.18 = 61,239.24/x
  3. Step 3: Cross multiply
    103,688.64x = 143,082.18 × 61,239.24
  4. Step 4: Simplify right side
    103,688.64x = 8,762,243,960.74
  5. Step 5: Solve for x
    x = 8,762,243,960.74/103,688.64
  6. Step 6: Final answer
    x = 84,505.34

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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.