Home / 103,001,899.19-142,268,371.25-77,011,678.67

Finding the Fourth Proportional to 103,001,899.19, 142,268,371.25 and 77,011,678.67

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Solution

The fourth proportional to 103,001,899.19, 142,268,371.25 and 77,011,678.67 is: 106,370,136.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,001,899.19 : 142,268,371.25 = 77,011,678.67 : x
  2. Step 2: Convert to fraction form
    103,001,899.19/142,268,371.25 = 77,011,678.67/x
  3. Step 3: Cross multiply
    103,001,899.19x = 142,268,371.25 × 77,011,678.67
  4. Step 4: Simplify right side
    103,001,899.19x = 10,956,326,090,512,868
  5. Step 5: Solve for x
    x = 10,956,326,090,512,868/103,001,899.19
  6. Step 6: Final answer
    x = 106,370,136.64

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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.