Home / 111,081,989.28-153,318,643.12-73,913,807.60

Finding the Fourth Proportional to 111,081,989.28, 153,318,643.12 and 73,913,807.60

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Solution

The fourth proportional to 111,081,989.28, 153,318,643.12 and 73,913,807.60 is: 102,018,020.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,081,989.28 : 153,318,643.12 = 73,913,807.60 : x
  2. Step 2: Convert to fraction form
    111,081,989.28/153,318,643.12 = 73,913,807.60/x
  3. Step 3: Cross multiply
    111,081,989.28x = 153,318,643.12 × 73,913,807.60
  4. Step 4: Simplify right side
    111,081,989.28x = 11,332,364,689,064,744
  5. Step 5: Solve for x
    x = 11,332,364,689,064,744/111,081,989.28
  6. Step 6: Final answer
    x = 102,018,020.77

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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.