Home / 99,036.81-136,670.18-53,715.87

Finding the Fourth Proportional to 99,036.81, 136,670.18 and 53,715.87

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Solution

The fourth proportional to 99,036.81, 136,670.18 and 53,715.87 is: 74,127.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,036.81 : 136,670.18 = 53,715.87 : x
  2. Step 2: Convert to fraction form
    99,036.81/136,670.18 = 53,715.87/x
  3. Step 3: Cross multiply
    99,036.81x = 136,670.18 × 53,715.87
  4. Step 4: Simplify right side
    99,036.81x = 7,341,357,353.18
  5. Step 5: Solve for x
    x = 7,341,357,353.18/99,036.81
  6. Step 6: Final answer
    x = 74,127.56

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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.