Home / 113,315,363.10-169,973,044.65-78,877,986.30

Finding the Fourth Proportional to 113,315,363.10, 169,973,044.65 and 78,877,986.30

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Solution

The fourth proportional to 113,315,363.10, 169,973,044.65 and 78,877,986.30 is: 118,316,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,315,363.10 : 169,973,044.65 = 78,877,986.30 : x
  2. Step 2: Convert to fraction form
    113,315,363.10/169,973,044.65 = 78,877,986.30/x
  3. Step 3: Cross multiply
    113,315,363.10x = 169,973,044.65 × 78,877,986.30
  4. Step 4: Simplify right side
    113,315,363.10x = 13,407,131,487,271,988
  5. Step 5: Solve for x
    x = 13,407,131,487,271,988/113,315,363.10
  6. Step 6: Final answer
    x = 118,316,979.45

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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.