Home / 125,341,967.48-172,972,541.16-78,326,341.44

Finding the Fourth Proportional to 125,341,967.48, 172,972,541.16 and 78,326,341.44

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Solution

The fourth proportional to 125,341,967.48, 172,972,541.16 and 78,326,341.44 is: 108,090,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,341,967.48 : 172,972,541.16 = 78,326,341.44 : x
  2. Step 2: Convert to fraction form
    125,341,967.48/172,972,541.16 = 78,326,341.44/x
  3. Step 3: Cross multiply
    125,341,967.48x = 172,972,541.16 × 78,326,341.44
  4. Step 4: Simplify right side
    125,341,967.48x = 13,548,306,318,642,612
  5. Step 5: Solve for x
    x = 13,548,306,318,642,612/125,341,967.48
  6. Step 6: Final answer
    x = 108,090,742.40

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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.