Home / 142,827,527.90-197,102,115.51-77,637,431.90

Finding the Fourth Proportional to 142,827,527.90, 197,102,115.51 and 77,637,431.90

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Solution

The fourth proportional to 142,827,527.90, 197,102,115.51 and 77,637,431.90 is: 107,139,725.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,827,527.90 : 197,102,115.51 = 77,637,431.90 : x
  2. Step 2: Convert to fraction form
    142,827,527.90/197,102,115.51 = 77,637,431.90/x
  3. Step 3: Cross multiply
    142,827,527.90x = 197,102,115.51 × 77,637,431.90
  4. Step 4: Simplify right side
    142,827,527.90x = 15,302,502,070,253,560
  5. Step 5: Solve for x
    x = 15,302,502,070,253,560/142,827,527.90
  6. Step 6: Final answer
    x = 107,139,725.06

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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.