Home / 120,578,386-180,878,368.08-46,800,436.32

Finding the Fourth Proportional to 120,578,386, 180,878,368.08 and 46,800,436.32

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Solution

The fourth proportional to 120,578,386, 180,878,368.08 and 46,800,436.32 is: 70,204,842.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,578,386 : 180,878,368.08 = 46,800,436.32 : x
  2. Step 2: Convert to fraction form
    120,578,386/180,878,368.08 = 46,800,436.32/x
  3. Step 3: Cross multiply
    120,578,386x = 180,878,368.08 × 46,800,436.32
  4. Step 4: Simplify right side
    120,578,386x = 8,465,186,546,993,561
  5. Step 5: Solve for x
    x = 8,465,186,546,993,561/120,578,386
  6. Step 6: Final answer
    x = 70,204,842.08

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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.