Home / 138,023.90-190,468.55-77,597.08

Finding the Fourth Proportional to 138,023.90, 190,468.55 and 77,597.08

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Solution

The fourth proportional to 138,023.90, 190,468.55 and 77,597.08 is: 107,081.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,023.90 : 190,468.55 = 77,597.08 : x
  2. Step 2: Convert to fraction form
    138,023.90/190,468.55 = 77,597.08/x
  3. Step 3: Cross multiply
    138,023.90x = 190,468.55 × 77,597.08
  4. Step 4: Simplify right side
    138,023.90x = 14,779,803,311.83
  5. Step 5: Solve for x
    x = 14,779,803,311.83/138,023.90
  6. Step 6: Final answer
    x = 107,081.48

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1.5x scale

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.