Home / 128,679,022.40-193,046,527.20-42,402,747.20

Finding the Fourth Proportional to 128,679,022.40, 193,046,527.20 and 42,402,747.20

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Solution

The fourth proportional to 128,679,022.40, 193,046,527.20 and 42,402,747.20 is: 63,613,345.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,679,022.40 : 193,046,527.20 = 42,402,747.20 : x
  2. Step 2: Convert to fraction form
    128,679,022.40/193,046,527.20 = 42,402,747.20/x
  3. Step 3: Cross multiply
    128,679,022.40x = 193,046,527.20 × 42,402,747.20
  4. Step 4: Simplify right side
    128,679,022.40x = 8,185,703,090,699,524
  5. Step 5: Solve for x
    x = 8,185,703,090,699,524/128,679,022.40
  6. Step 6: Final answer
    x = 63,613,345.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.