Home / 123,870.32-185,854.68-39,643.40

Finding the Fourth Proportional to 123,870.32, 185,854.68 and 39,643.40

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Solution

The fourth proportional to 123,870.32, 185,854.68 and 39,643.40 is: 59,480.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,870.32 : 185,854.68 = 39,643.40 : x
  2. Step 2: Convert to fraction form
    123,870.32/185,854.68 = 39,643.40/x
  3. Step 3: Cross multiply
    123,870.32x = 185,854.68 × 39,643.40
  4. Step 4: Simplify right side
    123,870.32x = 7,367,911,421.11
  5. Step 5: Solve for x
    x = 7,367,911,421.11/123,870.32
  6. Step 6: Final answer
    x = 59,480.85

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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.