Home / 137,537,667.18-189,802,981.45-74,814,306.70

Finding the Fourth Proportional to 137,537,667.18, 189,802,981.45 and 74,814,306.70

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Solution

The fourth proportional to 137,537,667.18, 189,802,981.45 and 74,814,306.70 is: 103,244,287.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,537,667.18 : 189,802,981.45 = 74,814,306.70 : x
  2. Step 2: Convert to fraction form
    137,537,667.18/189,802,981.45 = 74,814,306.70/x
  3. Step 3: Cross multiply
    137,537,667.18x = 189,802,981.45 × 74,814,306.70
  4. Step 4: Simplify right side
    137,537,667.18x = 14,199,978,466,774,710
  5. Step 5: Solve for x
    x = 14,199,978,466,774,710/137,537,667.18
  6. Step 6: Final answer
    x = 103,244,287.60

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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.