Home / 142,827,524.40-197,102,110.68-77,637,428.40

Finding the Fourth Proportional to 142,827,524.40, 197,102,110.68 and 77,637,428.40

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Solution

The fourth proportional to 142,827,524.40, 197,102,110.68 and 77,637,428.40 is: 107,139,720.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,827,524.40 : 197,102,110.68 = 77,637,428.40 : x
  2. Step 2: Convert to fraction form
    142,827,524.40/197,102,110.68 = 77,637,428.40/x
  3. Step 3: Cross multiply
    142,827,524.40x = 197,102,110.68 × 77,637,428.40
  4. Step 4: Simplify right side
    142,827,524.40x = 15,302,501,005,407,378
  5. Step 5: Solve for x
    x = 15,302,501,005,407,378/142,827,524.40
  6. Step 6: Final answer
    x = 107,139,720.23

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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.