Home / 134,636,987.34-185,791,035.16-78,117,354.78

Finding the Fourth Proportional to 134,636,987.34, 185,791,035.16 and 78,117,354.78

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Solution

The fourth proportional to 134,636,987.34, 185,791,035.16 and 78,117,354.78 is: 107,797,303.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,636,987.34 : 185,791,035.16 = 78,117,354.78 : x
  2. Step 2: Convert to fraction form
    134,636,987.34/185,791,035.16 = 78,117,354.78/x
  3. Step 3: Cross multiply
    134,636,987.34x = 185,791,035.16 × 78,117,354.78
  4. Step 4: Simplify right side
    134,636,987.34x = 14,513,504,208,537,174
  5. Step 5: Solve for x
    x = 14,513,504,208,537,174/134,636,987.34
  6. Step 6: Final answer
    x = 107,797,303.66

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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.